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Firearm

This article is about the projectile weapon. For other uses, see Firearm (disambiguation).
Not to be confused with air gun.
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A firearm is any type of gun designed to be readily carried and used by an individual. The term is legally defined further in different countries (see Legal definitions).

A US Navy sailor fires a Mk 18 Mod 1 carbine at a target.

The first firearms originated in 10th-century China, when bamboo tubes containing gunpowder and pellet projectiles were mounted on spears to make the portable fire lance, operable by a single person, which was later used to good effect in the Siege of De'an in 1132. In the 13th century, fire lance barrels were replaced with metal tubes and transformed into the metal-barreled hand cannon. The technology gradually spread throughout Eurasia during the 14th century. Older firearms typically used black powder as a propellant, but modern firearms use smokeless powder or other propellants. Most modern firearms (with the notable exception of smoothbore shotguns) have rifled barrels to impart spin to the projectile for improved flight stability.

Modern firearms can be described by their caliber (i.e. bore diameter). For pistols and rifles this is given in millimeters or inches (e.g. 7.62mm or .308 in.), or in the case of shotguns by their gauge (e.g. 12 ga. and 20 ga.). They are also described by the type of action employed (e.g. muzzleloader, breechloader, lever, bolt, pump, revolver, semi-automatic, fully automatic, etc.), together with the usual means of deportment (i.e. hand-held or mechanical mounting). Further classification may make reference to the type of barrel used (i.e. rifled) and to the barrel length (e.g. 24 inches), to the firing mechanism (e.g. matchlock, wheellock, flintlock, or percussion lock), to the design's primary intended use (e.g. hunting rifle), or to the commonly accepted name for a particular variation (e.g. Gatling gun).

Shooters aim firearms at their targets with hand-eye coordination, using either iron sights or optical sights. The accurate range of pistols generally does not exceed 100 metres (110 yd; 330 ft), while most rifles are accurate to 500 metres (550 yd; 1,600 ft) using iron sights, or to longer ranges whilst using optical sights. (Firearm rounds may be dangerous or lethal well beyond their accurate range; the minimum distance for safety is much greater than the specified range for accuracy). Purpose-built sniper rifles and anti-materiel rifles are accurate to ranges of more than 2,000 metres (2,200 yd).

Contents

For a more detailed list of common firearms, see List of firearms, List of most-produced firearms, and Small Arms and Light Weapons.

A firearm is a barreled ranged weapon that inflicts damage on targets by launching one or more projectiles driven by rapidly expanding high-pressure gas produced by exothermic combustion (deflagration) of a chemical propellant, historically black powder, now smokeless powder.

In the military, firearms are categorized into "heavy" and "light" weapons regarding their portability by foot soldiers. Light firearms are those that can be readily carried by individual infantrymen (i.e. "man-portable"), though they might still require multiple individuals (crew-served) to achieve optimal operational capacity. Heavy firearms are those that are too large and heavy to be transported on foot, or too unstable against recoil, and thus require the support of a weapons platform (e.g. a fixed mount, wheeled carriage, vehicle, aircraft or water vessel) to be tactically mobile or useful.

The subset of light firearms that only use kinetic projectiles and are compact enough to be operated to full capacity by a single infantryman (individual-served) are also referred to as "small arms". Such firearms include handguns such as revolvers, pistols and derringers, and long guns such as rifles (including many subtypes such as anti-material rifles, sniper rifles/designated marksman rifles, battle rifles, assault rifles and carbines), shotguns, submachine guns/personal defense weapons and squad automatic weapons/light machine guns.

Among the world's arms manufacturers, the top firearms manufacturers are Browning, Remington, Colt, Ruger, Smith & Wesson, Savage, Mossberg (USA), Heckler & Koch, SIG Sauer, Walther (Germany), ČZUB (Czech Republic), Glock, Steyr-Mannlicher (Austria), FN Herstal (Belgium), Beretta (Italy), Norinco (China), Tula Arms and Kalashnikov (Russia), while former top producers included Mauser, Springfield Armory, and Rock Island Armory under Armscor (Philippines).[citation needed]

As of 2018[update] the Small Arms Survey reported that there were over one billion firearms distributed globally, of which 857 million (about 85 percent) were in civilian hands. U.S. civilians alone account for 393 million (about 46 percent) of the worldwide total of civilian-held firearms. This amounts to "120.5 firearms for every 100 residents." The world's armed forces control about 133 million (about 13 percent) of the global total of small arms, of which over 43 percent belong to two countries: the Russian Federation (30.3 million) and China (27.5 million). Law enforcement agencies control about 23 million (about 2 percent) of the global total of small arms.

Configuration

Handguns

Main article: Handgun
A Glock 17 semi-automatic pistol

Handguns are guns that can be used with a single hand, and are the smallest of all firearms. However, the legal definition of a "handgun" varies between countries and regions. For example, in South African law, a "handgun" means a pistol or revolver which can be held in and discharged with one hand. In Australia, the gun law considers a handgun as a firearm carry-able or concealable about the person; or capable of being raised and fired by one hand; or not exceeding 65 cm (26 in). In the United States, Title 18 and the ATF considers a handgun as a firearm which has a short stock and is designed to be held and fired by the use of a single hand.

There are two common types of handguns: revolvers and semi-automatic pistols. Revolvers have a number of firing chambers or "charge holes" in a revolving cylinder; each chamber in the cylinder is loaded with a single cartridge or charge. Semi-automatic pistols have a single fixed firing-chamber machined into the rear of the barrel, and a magazine so they can be used to fire more than one round. Each press of the trigger fires a cartridge, using the energy of the cartridge to activate a mechanism so that the next cartridge may be fired immediately. This is opposed to "double-action" revolvers, which accomplish the same end using a mechanical action linked to the trigger pull.

With the invention of the revolver in 1818, handguns capable of holding multiple rounds became popular. Certain designs of auto-loading pistol appeared beginning in the 1870s and had largely supplanted revolvers in military applications by the end of World War I. By the end of the 20th century, most handguns carried regularly by military, police and civilians were semi-automatic, although revolvers were still widely used. Generally speaking, military and police forces use semi-automatic pistols due to their high magazine capacities and ability to rapidly reload by simply removing the empty magazine and inserting a loaded one. Revolvers are very common among handgun hunters because revolver cartridges are usually more powerful than similar caliber semi-automatic pistol cartridges (which are designed for self-defense) and the strength, simplicity and durability of the revolver design is well-suited to outdoor use. Revolvers, especially in .22 LR and 38 Special/357 Magnum, are also common concealed weapons in jurisdictions allowing this practice because their simple mechanics make them smaller than many autoloaders while remaining reliable. Both designs are common among civilian gun owners, depending on the owner's intention (self-defense, hunting, target shooting, competitions, collecting, etc.).

Long guns

Main article: Long gun

A long gun is any firearm with a notably long barrel, typically a length of 10 to 30 inches (250 to 760 mm) (there are restrictions on minimum barrel length in many jurisdictions; maximum barrel length is usually a matter of practicality). Unlike a handgun, long guns are designed to be held and fired with both hands, while braced against either the hip or the shoulder for better stability. The receiver and trigger group is mounted into a stock made of wood, plastic, metal, or composite material, which has sections that form a foregrip, rear grip, and optionally (but typically) a shoulder mount called the butt. Early long arms, from the Renaissance up to the mid-19th century, were generally smoothbore firearms that fired one or more ball shot, called muskets or arquebus depending on caliber and firing mechanism.

Rifles and shotguns
Main articles: Rifle and Shotgun

Most modern long guns are either rifles or shotguns. Both are the successors of the musket, diverging from their parent weapon in distinct ways. A rifle is so named for the spiral grooves (riflings) machined into the inner (bore) surface of its barrel, which imparts a gyroscopically-stabilizing spin to the bullets that it fires. Shotguns are predominantly smoothbore firearms designed to fire a number of shot in each discharge; pellet sizes commonly ranging between 2 mm #9 birdshot and 8.4 mm #00 (double-aught) buckshot. Shotguns are also capable of firing single solid projectiles called slugs, or specialty (often "less lethal") rounds such as bean bags, tear gas or breaching rounds. Rifles produce a single point of impact with each firing but a long range and high accuracy; while shotguns produce a cluster of impact points with considerably less range and accuracy. However, the larger impact area of shotguns can compensate for reduced accuracy, since shot spreads during flight; consequently, in hunting, shotguns are generally used for fast-flying game birds.

Rifles and shotguns are commonly used for hunting and often also for home defense, security guard and law enforcement. Usually, large game are hunted with rifles (although shotguns can be used, particularly with slugs), while birds are hunted with shotguns. Shotguns are sometimes preferred for defending a home or business due to their wide impact area, multiple wound tracks (when using buckshot), shorter range, and reduced penetration of walls (when using lighter shot), which significantly reduces the likelihood of unintended harm, although the handgun is also common.

A US Marine firing a Mossberg 500 shotgun

There are a variety of types of rifles and shotguns based on the method they are reloaded. Bolt-action and lever-action rifles are manually operated. Manipulation of the bolt or the lever causes the spent cartridge to be removed, the firing mechanism recocked, and a fresh cartridge inserted. These two types of action are almost exclusively used by rifles. Slide-action (commonly called 'pump-action') rifles and shotguns are manually cycled by shuttling the foregrip of the firearm back and forth. This type of action is typically used by shotguns, but several major manufacturers make rifles that use this action.

Both rifles and shotguns also come in break-action varieties that do not have any kind of reloading mechanism at all but must be hand-loaded after each shot. Both rifles and shotguns come in single- and double-barreled varieties; however, due to the expense and difficulty of manufacturing, double-barreled rifles are rare. Double-barreled rifles are typically intended for African big-game hunts where the animals are dangerous, ranges are short, and speed is of the essence. Very large and powerful calibers are normal for these firearms.

Rifles have been in nationally featured marksmanship events in Europe and the United States since at least the 18th century, when rifles were first becoming widely available. One of the earliest purely "American" rifle-shooting competitions took place in 1775, when Daniel Morgan was recruiting sharpshooters in Virginia for the impending American Revolutionary War. In some countries, rifle marksmanship is still a matter of national pride. Some specialized rifles in the larger calibers are claimed to have an accurate range of up to about 1 mile (1,600 m), although most have considerably less. In the second half of the 20th century, competitive shotgun sports became perhaps even more popular than riflery, largely due to the motion and immediate feedback in activities such as skeet, trap and sporting clays.

In military use, bolt-action rifles with high-power scopes are common as sniper rifles, however by the Korean War the traditional bolt-action and semi-automatic rifles used by infantrymen had been supplemented by select-fire designs known as automatic rifles.

Carbines
Main article: Carbine

A carbine is a firearm similar to a rifle in form and intended usage, but generally shorter or smaller than the typical "full-size" hunting or battle rifle of a similar time period, and sometimes using a smaller or less-powerful cartridge. Carbines were and are typically used by members of the military in roles that are expected to engage in combat, but where a full-size rifle would be an impediment to the primary duties of that soldier (vehicle drivers, field commanders and support staff, airborne troops, engineers, etc.). Carbines are also common in law enforcement and among civilian owners where similar size, space and/or power concerns may exist. Carbines, like rifles, can be single-shot, repeating-action, semi-automatic or select-fire/fully automatic, generally depending on the time period and intended market. Common historical examples include the Winchester Model 1892, Lee–Enfield "Jungle Carbine", SKS, M1 carbine (no relation to the larger M1 Garand) and M4 carbine (a more compact variant of the current M16 rifle). Modern U.S. civilian carbines include compact customizations of the AR-15, Ruger Mini-14, Beretta Cx4 Storm, Kel-Tec SUB-2000, bolt-action rifles generally falling under the specifications of a scout rifle, and aftermarket conversion kits for popular pistols including the M1911 and Glock models.

Machine guns
Main article: Machine gun
MG 42 general-purpose machine gun with retracted bipod

A machine gun is a fully automatic firearm, most often separated from other classes of automatic weapons by the use of belt-fed ammunition (though some designs employ drum, pan or hopper magazines), generally in a rifle-inspired caliber ranging between 5.56×45mm NATO (.223 Remington) for a light machine gun to as large as .50 BMG or even larger for crewed or aircraft weapons. Although not widely fielded until World War I, early machine guns were being used by militaries in the second half of the 19th century. Notables in the U.S. arsenal during the 20th century included the M2 Browning .50 caliber heavy machine gun, M1919 Browning .30 caliber medium machine gun, and the M60 7.62×51mm NATO general-purpose machine gun which came into use around the Vietnam War. Machine guns of this type were originally defensive firearms crewed by at least two men, mainly because of the difficulties involved in moving and placing them, their ammunition, and their tripod. In contrast, modern light machine guns such as the FN Minimi are often wielded by a single infantryman. They provide a large ammunition capacity and a high rate of fire, and are typically used to give suppressing fire during infantry movement. Accuracy on machine guns varies based on a wide number of factors from design to manufacturing tolerances, most of which have been improved over time. Machine guns are often mounted on vehicles or helicopters and have been used since World War I as offensive firearms in fighter aircraft and tanks (e.g. for air combat or suppressing fire for ground troop support).

The definition of a machine gun is different in U.S. law. The National Firearms Act and Firearm Owners Protection Act define a "machine gun" in the United States code Title 26, Subtitle E, Chapter 53, Subchapter B, Part 1, § 5845 as: "... any firearm which shoots ... automatically more than one shot, without manual reloading, by a single function of the trigger". "Machine gun" is therefore largely synonymous with "automatic weapon" in the U.S. civilian parlance, covering all automatic firearms.

Sniper rifles
Main article: Sniper rifle
The Accuracy International Arctic Warfare series of sniper rifles is a standard issue in the armies of several countries, including those of Britain, Ireland, and Germany (shown).

The definition of a sniper rifle is disputed among military, police and civilian observers alike, however most generally define a “sniper rifle” as a high powered, semi-automatic/bolt action, precision rifle with an accurate range further than that of a standard rifle. These are often purpose-built for their applications. For example, a police sniper rifle may differ in specs from a military rifle. Police snipers generally do not engage targets at extreme range, but rather, a target at medium range. They may also have multiple targets within the shorter range, and thus a semi-automatic model is preferred to a bolt action. They also may be more compact than mil-spec rifles as police marksmen may need more portability. On the other hand, a military rifle is more likely to use a higher-powered cartridge to defeat body armor or medium-light cover. They are more commonly (but not a lot more) bolt-action, as they are simpler to build and maintain. Also, due to fewer moving and overall parts, they are much more reliable under adverse conditions. They may also have a more powerful scope to acquire targets further away. Overall, sniper units never became prominent until World War I, when the Germans displayed their usefulness on the battlefield. Since then, they have become irrevocably embedded in warfare. Examples of sniper rifles include the Accuracy International AWM, Sako TRG-42 and the CheyTac M200. Examples of specialized sniper cartridges include the .338 Lapua Magnum, .300 Winchester Magnum, and .408 CheyTac rounds.

Submachine guns
Main article: Submachine gun
Czechoslovak 7.65 mm submachine gun Škorpion vz. 61 designed in 1959.

A submachine gun is a magazine-fed firearm, usually smaller than other automatic firearms, that fires pistol-caliber ammunition; for this reason certain submachine guns can also be referred to as machine pistols, especially when referring to handgun-sized designs such as the Škorpion vz. 61 and Glock 18. Well-known examples are the Israeli Uzi and Heckler & Koch MP5 which use the 9×19mm Parabellum cartridge, and the American Thompson submachine gun which fires .45 ACP. Because of their small size and limited projectile penetration compared to high-power rifle rounds, submachine guns are commonly favored by military, paramilitary and police forces for close-quarters engagements such as inside buildings, in urban areas or in trench complexes.

Suomi M31 submachine with a 70-round drum magazine attached, 20- and 50-round box magazines.

Submachine guns were originally about the size of carbines. Because they fire pistol ammunition, they have limited long-range use, but in close combat can be used in fully automatic in a controllable manner due to the lighter recoil of the pistol ammunition. They are also extremely inexpensive and simple to build in time of war, enabling a nation to quickly arm its military. In the latter half of the 20th century, submachine guns were being miniaturized to the point of being only slightly larger than some large handguns. The most widely used submachine gun at the end of the 20th century was the Heckler & Koch MP5. The MP5 is actually designated as a "machine pistol" by Heckler & Koch (MP5 stands for Maschinenpistole 5, or Machine Pistol 5), although some reserve this designation for even smaller submachine guns such as the MAC-10 and Glock 18, which are about the size and shape of pistols.

Automatic rifles
Main article: Automatic rifle

An automatic rifle is a magazine-fed firearm, wielded by a single infantryman, that is chambered for rifle cartridges and capable of automatic fire. The M1918 Browning Automatic Rifle was the first U.S. infantry weapon of this type, and was generally used for suppressive or support fire in the role now usually filled by the light machine gun. Other early automatic rifles include the Fedorov Avtomat and the Huot Automatic Rifle. Later, German forces fielded the Sturmgewehr 44 during World War II, a light automatic rifle firing a reduced power "intermediate cartridge". This design was to become the basis for the "assault rifle" subclass of automatic weapons, as contrasted with "battle rifles", which generally fire a traditional "full-power" rifle cartridge.

Assault rifles
Main article: Assault rifle
The AK-47 is one of the most widely produced and used assault rifles in the world.

In World War II, Germany introduced the StG 44, and brought to the forefront of firearm technology what eventually became the class of firearm most widely adopted by the military, the assault rifle. An assault rifle is usually slightly smaller than a battle rifle such as the American M14, but the chief differences defining an assault rifle are select-fire capability and the use of a rifle round of lesser power, known as an intermediate cartridge.

Soviet engineer Mikhail Kalashnikov quickly adapted the German concept, using a less-powerful 7.62×39mm cartridge derived from the standard 7.62×54mmR Russian battle rifle round, to produce the AK-47, which has become the world's most widely used assault rifle. Soon after World War II, the Automatic Kalashnikov AK-47 assault rifle began to be fielded by the Soviet Union and its allies in the Eastern Bloc, as well as by nations such as China, North Korea, and North Vietnam.

In the United States, the assault rifle design was later in coming; the replacement for the M1 Garand of WWII was another John Garand design chambered for the new 7.62×51mm NATO cartridge; the select-fire M14, which was used by the U.S. military until the 1960s. The significant recoil of the M14 when fired in full-automatic mode was seen as a problem as it reduced accuracy, and in the 1960s it was replaced by Eugene Stoner's AR-15, which also marked a switch from the powerful .30 caliber cartridges used by the U.S. military up until early in the Vietnam War to the much less powerful but far lighter and light recoiling .223 caliber (5.56mm) intermediate cartridge. The military later designated the AR-15 as the "M16". The civilian version of the M16 continues to be known as the AR-15 and looks exactly like the military version, although to conform to ATF regulations in the U.S., it lacks the mechanism that permits fully automatic fire.

Variants of both of the M16 and AK-47 are still in wide international use today, though other automatic rifle designs have since been introduced. A smaller version of the M16A2, the M4 carbine, is widely used by U.S. and NATO tank and vehicle crews, airbornes, support staff, and in other scenarios where space is limited. The IMI Galil, an Israeli-designed weapon based on the action of the AK-47, is in use by Israel, Italy, Burma, the Philippines, Peru, and Colombia. Swiss Arms of Switzerland produces the SIG SG 550 assault rifle used by France, Chile, and Spain among others, and Steyr Mannlicher produces the AUG, a bullpup rifle in use in Austria, Australia, New Zealand, Ireland, and Saudi Arabia among other nations.

Modern designs call for compact weapons retaining firepower. The bullpup design, by mounting the magazine behind the trigger, unifies the accuracy and firepower of the traditional assault rifle with the compact size of the submachine gun (though submachine guns are still used); examples are the French FAMAS and the British SA80.

Personal defense weapons
FN P90 PDW

A recently developed class of firearm is the personal defense weapon or PDW, which is in simplest terms a submachine gun designed to fire ammunitions with ballistic performance similar to rifle cartridges. While a submachine gun is desirable for its compact size and ammunition capacity, its pistol cartridges lack the penetrating capability of a rifle round. Conversely, rifle bullets can pierce light armor and are easier to shoot accurately, but even a carbine such as the Colt M4 is larger and/or longer than a submachine gun, making it harder to maneuver in close quarters. The solution many firearms manufacturers have presented is a weapon resembling a submachine gun in size and general configuration, but which fires a higher-powered armor-penetrating round (often specially designed for the weapon), thus combining the advantages of a carbine and submachine gun. This also earned the PDWs an infrequently used nickname — the submachine carbines. The FN P90 and Heckler & Koch MP7 are most famous examples of PDWs.

Battle rifles
Main article: Battle rifle

Battle rifles are another subtype of rifle, usually defined as selective fire rifles that use full power rifle cartridges, examples of which include the 7.62x51mm NATO, 7.92x57mm Mauser, and 7.62x54mmR. These serve similar purposes as assault rifles, as they both are usually employed by ground infantry. However, some prefer battle rifles due to their more powerful cartridge, despite added recoil. Some semi-automatic sniper rifles are configured from battle rifles.

Function

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Main article: Firearm action

Firearms are also categorized by their functioning cycle or "action" which describes its loading, firing, and unloading cycle.

Manual

The earliest evolution of the firearm, there are many types of manual action firearms. These can be divided into two basic categories: single shot and repeating.

A single shot firearm can only be fired once per equipped barrel before it must be reloaded or charged via an external mechanism or series of steps. A repeating firearm can be fired multiple times, but can only be fired once with each subsequent pull of the trigger. Between trigger pulls, the firearm's action must be reloaded or charged via an internal mechanism.

Lever action

A gun which has a lever that is pulled down then back up to expel the old cartridge then load a new round.

Pump action

Pump action weapons are primarily shotguns. A pump action is created when the user slides a lever (usually a grip) and it brings a new round in the chamber while expelling the old one.

Semi-automatic

A semi-automatic, self-loading, or "auto loader" firearm is one that performs all steps necessary to prepare it for firing again after a single discharge, until cartridges are no longer available in the weapon's feed device or magazine. Auto loaders fire one round with each pull of the trigger. Some people confuse the term with "fully automatic" firearms. (See next.) While some semi-automatic rifles may resemble military-style firearms, they are not properly classified "Assault Weapons" which refers to those that continue to fire until the trigger is no longer depressed.

Automatic

Main article: Automatic firearm

An automatic firearm, or "fully automatic", "fully auto", or "full auto", is generally defined as one that continues to load and fire cartridges from its magazine as long as the trigger is depressed (and until the magazine is depleted of available ammunition.) The first weapon generally considered in this category is the Gatling gun, originally a carriage-mounted, crank-operated firearm with multiple rotating barrels that was fielded in the American Civil War. The modern trigger-actuated machine gun began with various designs developed in the late 19th century and fielded in World War I, such as the Maxim gun, Lewis Gun, and MG 08 "Spandau". Most automatic weapons are classed as long guns (as the ammunition used is of similar type as for rifles, and the recoil of the weapon's rapid fire is better controlled with two hands), but handgun-sized automatic weapons also exist, generally in the "submachine gun" or "machine pistol" class.

Selective fire

Main article: Selective fire

Selective fire, or "select fire", means the capability of a weapon's fire control to be adjusted in either semi-automatic, fully automatic firing modes, or 3 round burst. The modes are chosen by means of a selector, which varies depending on the weapon's design. Some selective-fire weapons have burst fire mechanisms built in to limit the maximum number of shots fired in fully automatic mode, with most common limits being two or three rounds per trigger pull. The presence of selective-fire modes on firearms allows more efficient use of ammunition for specific tactical needs, either precision-aimed or suppressive fire. This capability is most commonly found on military weapons of the 20th and 21st centuries, most notably the assault rifles.

Hand cannon from the Chinese Yuan Dynasty (1271–1368)

The first primitive firearms were invented about 1250 AD in China when the man-portable fire lance (a bamboo or metal tube that could shoot ignited gunpowder) was combined with projectiles such as scrap metal, broken porcelain, or darts/arrows.

The earliest depiction of a firearm is a sculpture from a cave in Sichuan, China. The sculpture dates to the 12th century and is of a figure carrying a vase-shaped bombard, with flames and a cannonball coming out of it.: 31–32 The oldest surviving gun, a hand cannon made of bronze, has been dated to 1288 because it was discovered at a site in modern-day Acheng District, Heilongjiang, China, where the Yuan Shi records that battles were fought at that time. The firearm had a 6.9 inch barrel of a 1-inch diameter, a 2.6 inch chamber for the gunpowder and a socket for the firearm's handle. It is 13.4 inches long and 7.8 pounds without the handle, which would have been made of wood.: 32

The Arabs and Mamluks had firearms in the late 13th century. In the 14th century, firearms were obtained by the Europeans.: 1 The Koreans adopted firearms from the Chinese in the 14th century. The Iranians (first Aq Qoyunlu and Safavids) and Indians (first Mughals) all got them no later than the 15th century, from the Ottoman Turks. The people of Nusantara archipelago of Southeast Asia used long arquebus at least by the last quarter of 15th century.: 23

The istinggar, a result of Indo-Portuguese gun-making traditions

Even though the knowledge of making gunpowder-based weapon in Nusantara archipelago has been known after the failed Mongol invasion of Java (1293), and the predecessor of firearms, the pole gun (bedil tombak), was recorded as being used by Java in 1413,: 245 the knowledge of making "true" firearms came much later, after the middle of 15th century. It was brought by the Islamic nations of West Asia, most probably the Arabs. The precise year of introduction is unknown, but it may be safely concluded to be no earlier than 1460.: 23 Before the arrival of the Portuguese in Southeast Asia, the natives already possessed firearms, the Java arquebus.

A) The matchlock gun with button for trigger, which came to Lisbon from Bohemia, used by the Portuguese until the conquest of Goa in 1510. B) The Indo-Portuguese matchlock gun resulted from the combination of Portuguese and Goan gunmaking. C) The Japanese matchlock gun appeared as a copy of the first firearm introduced in the Japanese islands.

The technology of firearm in Southeast Asia further improved after the Portuguese capture of Malacca (1511). Starting in the 1513, the tradition of German-Bohemian gun making were merged with Turkish gun making traditions.: 39–41 This resulted in Indo-Portuguese tradition of matchlocks. Indian craftsmen modified the design by introducing a very short, almost pistol-like buttstock held against the cheek, not the shoulder, when aiming. They also reduced the caliber and made the gun lighter and more balanced. This was a hit with the Portuguese who did a lot of fighting aboard ship and on river craft, and valued a more compact gun.: 41 The Malaccan gunfounders,[check spelling] compared as being in the same level with those of Germany, quickly adapted these new firearms, and thus a new type of arquebus, the istinggar, appeared.: 385 The Japanese did not acquire firearms until the 16th century, and then from the Portuguese rather than the Chinese.: 31–32

A musketeer (1608)

The development behind firearms accelerated during the 19th and 20th centuries. Breech-loading became more or less a universal standard for the reloading of most hand-held firearms and continues to be so with some notable exceptions (such as mortars). Instead of loading individual rounds into weapons, magazines holding multiple munitions were adopted—these aided rapid reloading. Automatic and semi-automatic firing mechanisms meant that a single soldier could fire many more rounds in a minute than a vintage weapon could fire over the course of a battle. Polymers and alloys in firearm construction made weaponry progressively lighter and thus easier to deploy. Ammunition changed over the centuries from simple metallic ball-shaped projectiles that rattled down the barrel to bullets and cartridges manufactured to high precision. Especially in the past century has particular attention been devoted to accuracy and sighting to make firearms altogether far more accurate than ever before. More than any single factor though, firearms have proliferated due to the advent of mass production—enabling arms manufacturers to produce large quantities of weaponry to a consistent standard.[citation needed]

Velocities of bullets increased with the use of a "jacket" of a metal such as copper or copper alloys that covered a lead core and allowed the bullet to glide down the barrel more easily than exposed lead. Such bullets are designated as "full metal jacket" (FMJ). Such FMJ bullets are less likely to fragment on impact and are more likely to traverse through a target while imparting less energy. Hence, FMJ bullets impart less tissue damage than non-jacketed bullets that expand. (Dougherty and Eidt, 2009) This led to their adoption for military use by countries adhering to the Hague Convention in 1899.

That said, the basic principle behind firearm operation remains unchanged to this day. A musket of several centuries ago is still similar in principle to a modern-day assault rifle—using the expansion of gases to propel projectiles over long distances—albeit less accurately and rapidly.

Evolution

Early models

Fire lances
Main article: Fire lance

The Chinese fire lance from the 10th century was the direct predecessor to the modern concept of the firearm. It was not a gun itself, but an addition to the soldiers' spears. Originally it consisted of paper or bamboo barrels that would have incendiary gunpowder within it, that could be lit one time and would project flames at the enemy. Sometimes the Chinese troops would place small projectiles within the barrel that would also be projected when the gunpowder was lit, but most of the explosive force would create flames. Later, the barrel was changed to be made of metal, so that a more explosive gunpowder could be used and put more force into the propulsion of the projectile.: 31–32

Hand cannons
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Main article: Hand cannon
Hand cannon being fired from a stand, "Belli Fortis", manuscript, by Konrad Kyeser, 1400

The original predecessor of all firearms, the Chinese fire lance[when?] and hand cannon were loaded with gunpowder and the shot (initially lead shot, later replaced by cast iron[citation needed]) through the muzzle, while a fuse was placed at the rear. This fuse was lit, causing the gunpowder to ignite and propel the cannonball. In military use, the standard hand cannon was tremendously powerful, while also being somewhat useless[citation needed] due to relative inability of the gunner to aim the weapon, or control the ballistic properties of the projectile. Recoil could be absorbed by bracing the barrel against the ground using a wooden support, the forerunner of the stock. Neither the quality or amount of gunpowder, nor the consistency in projectile dimensions were controlled, with resulting inaccuracy in firing due to windage, variance in gunpowder composition, and the difference in diameter between the bore and the shot. The hand cannons were replaced by lighter carriage-mounted artillery pieces, and ultimately the arquebus.

In the 1420s gunpowder was used to propel missiles from hand-held tubes during the Hussite revolt.

Muskets
Main article: Musket

Muzzle-loading muskets (smooth-bored long guns) were among the first firearms developed.[when?] The firearm was loaded through the muzzle with gunpowder, optionally some wadding and then a bullet (usually a solid lead ball, but musketeers could shoot stones when they ran out of bullets). Greatly improved muzzleloaders (usually rifled instead of smooth-bored) are manufactured today and have many enthusiasts, many of whom hunt large and small game with their guns. Muzzleloaders have to be manually reloaded after each shot; a skilled archer could fire multiple arrows faster than most early muskets could be reloaded and fired, although by the mid-18th century, when muzzleloaders became the standard small armament of the military, a well-drilled soldier could fire six rounds in a minute using prepared cartridges in his musket. Before then, effectiveness of muzzleloaders was hindered by both the low reloading speed and, before the firing mechanism was perfected, the very high risk posed by the firearm to the person attempting to fire it.[citation needed]

One interesting solution to the reloading problem was the "Roman Candle Gun" with superposed loads. This was a muzzleloader in which multiple charges and balls were loaded one on top of the other, with a small hole in each ball to allow the subsequent charge to be ignited after the one ahead of it was ignited. It was neither a very reliable nor popular firearm, but it enabled a form of "automatic" fire long before the advent of the machine gun.

Loading techniques

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Main article: Muzzleloader

Most early firearms were muzzle-loading. This form of loading has several disadvantages, such as a slow rate of fire and having to expose oneself to enemy fire to reload as the weapon had to be pointed upright so the powder could be poured through the muzzle into the breech followed by the ramming the projectile into the breech. As effective methods of sealing the breech were developed through the development of sturdy, weatherproof, self-contained metallic cartridges, muzzle-loaders were replaced by single-shot breech loaders. Eventually single-shot weapons were replaced by the following repeater type weapons.

Internal magazines

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Main article: Magazine (firearms)

Many firearms made in the late 19th century through the 1950s used internal magazines to load the cartridge into the chamber of the weapon. The most notable and revolutionary weapons of this period appeared during the U.S. Civil War and they were the Spencer and Henry repeating rifles. Both used fixed tubular magazines, the former having the magazine in the buttstock and the latter under the barrel which allowed a larger capacity. Later weapons used fixed box magazines that could not be removed from the weapon without disassembling the weapon itself. Fixed magazines permitted the use of larger cartridges and eliminated the hazard of having the bullet of one cartridge butting next to the primer or rim of another cartridge. These magazines are loaded while they are in the weapon, often using a stripper clip. A clip is used to transfer cartridges into the magazine. Some notable weapons that use internal magazines include the Mosin–Nagant, the Mauser Kar 98k, the Springfield M1903, the M1 Garand, and the SKS. Firearms that have internal magazines are usually, but not always, rifles. Some exceptions to this include the Mauser C96 pistol, which uses an internal magazine, and the Breda 30, an Italian light machine gun.

Detachable magazines

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Many modern firearms use what are called detachable or box magazines as their method of chambering a cartridge. Detachable magazines can be removed from the weapon without disassembling the firearms, usually by pushing the magazine release.

Belt-fed weapons

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Main article: Belt (firearm)

A belt or ammunition belt is a device used to retain and feed cartridges into a firearm commonly used on machine guns. Belts were originally composed of canvas or cloth with pockets spaced evenly to allow the belt to be mechanically fed into the gun. These designs were prone to malfunctions due to the effects of oil and other contaminants altering the belt. Later belt designs used permanently connected metal links to retain the cartridges during feeding. These belts were more tolerant to exposure to solvents and oil. Some notable weapons that use belts are the M240, the M249, the M134 Minigun, and the PK Machine Gun.

Firing mechanisms

Further information: Trigger (firearms) and Firearm action
Matchlock
Main article: Matchlock
Various Japanese (samurai) Edo period matchlocks (tanegashima).

Matchlocks were the first and simplest firearms firing mechanisms developed. Using the matchlock mechanism, the powder in the gun barrel was ignited by a piece of burning cord called a "match". The match was wedged into one end of an S-shaped piece of steel. As the trigger (often actually a lever) was pulled, the match was brought into the open end of a "touch hole" at the base of the gun barrel, which contained a very small quantity of gunpowder, igniting the main charge of gunpowder in the gun barrel. The match usually had to be relit after each firing. The main parts to the matchlock firing mechanism are the pan, match, arm and trigger. A benefit of the pan and arm swivel being moved to the side of the gun was it gave a clear line of fire. An advantage to the matchlock firing mechanism is that it did not misfire. However, it also came with some disadvantages. One disadvantage was if it was raining the match could not be kept lit to fire the weapon. Another issue with the match was it could give away the position of soldiers because of the glow, sound, and smell. While European pistols were equipped with wheellock and flintlock mechanism, Asian pistols were equipped with matchlock mechanism.

Wheellock
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Main article: Wheellock
A wheellock pistol mechanism from the 17th century

The wheellock action, a successor to the matchlock, predated the flintlock. Despite its many faults, the wheellock was a significant improvement over the matchlock in terms of both convenience and safety, since it eliminated the need to keep a smoldering match in proximity to loose gunpowder. It operated using a small wheel much like that on cigarette lighters which was wound up with a key before use and which, when the trigger was pulled, spun against a flint, creating the shower of sparks that ignited the powder in the touch hole. Supposedly invented by Leonardo da Vinci, the Italian Renaissance man, the wheellock action was an innovation that was not widely adopted due to the high cost of the clockwork mechanism.

Flintlock
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Main article: Flintlock
Flintlock mechanism

The flintlock action was a major innovation in firearm design. The spark used to ignite the gunpowder in the touch hole was supplied by a sharpened piece of flint clamped in the jaws of a "cock" which, when released by the trigger, struck a piece of steel called the "frizzen" to create the necessary sparks. (The spring-loaded arm that holds a piece of flint or pyrite is referred to as a cock because of its resemblance to a rooster.) The cock had to be manually reset after each firing, and the flint had to be replaced periodically due to wear from striking the frizzen. (See also flintlock mechanism, snaphance, Miquelet lock) The flintlock was widely used during the 17th, 18th, and 19th centuries in both muskets and rifles.

Percussion cap
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Further information: Percussion cap and Caplock mechanism

Percussion caps (caplock mechanisms), coming into wide service in the early 19th century, were a dramatic improvement over flintlocks. With the percussion cap mechanism, the small primer charge of gunpowder used in all preceding firearms was replaced by a completely self-contained explosive charge contained in a small brass "cap". The cap was fastened to the touch hole of the gun (extended to form a "nipple") and ignited by the impact of the gun's "hammer". (The hammer is roughly the same as the cock found on flintlocks except that it does not clamp onto anything.) In the case of percussion caps the hammer was hollow on the end to fit around the cap in order to keep the cap from fragmenting and injuring the shooter.

Once struck, the flame from the cap in turn ignited the main charge of gunpowder, as with the flintlock, but there was no longer any need to charge the touch hole with gunpowder, and even better, the touch hole was no longer exposed to the elements. As a result, the percussion cap mechanism was considerably safer, far more weatherproof, and vastly more reliable (cloth-bound cartridges containing a premeasured charge of gunpowder and a ball had been in regular military service for many years, but the exposed gunpowder in the entry to the touch hole had long been a source of misfires). All muzzleloaders manufactured since the second half of the 19th century use percussion caps except those built as replicas of the flintlock or earlier firearms.

Cartridges

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Main article: Cartridge (firearms)
Further information: Magazine (firearms) and Ammunition
(From Left to Right): A .577 Snider cartridge (1867), a .577/450 Martini-Henry cartridge (1871), a later drawn brass .577/450 Martini-Henry cartridge, and a .303 British Mk VII SAA Ball cartridge.

Frenchman Louis-Nicolas Flobert invented the first rimfire metallic cartridge in 1845. His cartridge consisted of a percussion cap with a bullet attached to the top. Flobert then made what he called "parlor guns" for this cartridge, as these rifles and pistols were designed to be shot in indoor shooting parlors in large homes. These 6mm Flobert cartridges, do not contain any powder, the only propellant substance contained in the cartridge is the percussion cap. In English-speaking countries, the 6mm Flobert cartridge corresponds to .22 BB Cap and .22 CB Cap ammunition. These cartridges have a relatively low muzzle velocity of around 700 ft/s (210 m/s).

This was major innovation in firearms ammunition, previously delivered as separate bullets and powder, was combined in a single metallic (usually brass) cartridge containing a percussion cap, powder, and a bullet in one weatherproof package. The main technical advantage of the brass cartridge case was the effective and reliable sealing of high pressure gasses at the breech, as the gas pressure forces the cartridge case to expand outward, pressing it firmly against the inside of the gun barrel chamber. This prevents the leakage of hot gas which could injure the shooter. The brass cartridge also opened the way for modern repeating arms, by uniting the bullet, gunpowder and primer into one assembly that could be fed reliably into the breech by a mechanical action in the firearm.

Before this, a "cartridge" was simply a premeasured quantity of gunpowder together with a ball in a small cloth bag (or rolled paper cylinder), which also acted as wadding for the charge and ball. This early form of cartridge had to be rammed into the muzzleloader's barrel, and either a small charge of gunpowder in the touch hole or an external percussion cap mounted on the touch hole ignited the gunpowder in the cartridge. Cartridges with built-in percussion caps (called "primers") continue to this day to be the standard in firearms. In cartridge-firing firearms, a hammer (or a firing pin struck by the hammer) strikes the cartridge primer, which then ignites the gunpowder within. The primer charge is at the base of the cartridge, either within the rim (a "rimfire" cartridge) or in a small percussion cap embedded in the center of the base (a "centerfire" cartridge). As a rule, centerfire cartridges are more powerful than rimfire cartridges, operating at considerably higher pressures than rimfire cartridges. Centerfire cartridges are also safer, as a dropped rimfire cartridge has the potential to discharge if its rim strikes the ground with sufficient force to ignite the primer. This is practically impossible with most centerfire cartridges.

Nearly all contemporary firearms load cartridges directly into their breech. Some additionally or exclusively load from a magazine that holds multiple cartridges. A magazine is defined as a part of the firearm which exists to store ammunition and assist in its feeding by the action into the breech (such as through the rotation of a revolver's cylinder or by spring-loaded platforms in most pistol and rifle designs). Some magazines, such as that of most centerfire hunting rifles and all revolvers, are internal to and inseparable from the firearm, and are loaded by using a "clip". A clip, often mistakingly used to refer to a detachable "magazine", is a device that holds the ammunition by the rim of the case and is designed to assist the shooter in reloading the firearm's magazine. Examples include revolver speedloaders, the stripper clip used to aid loading rifles such as the Lee–Enfield or Mauser 98, and the en-bloc clip used in loading the M1 Garand. In this sense, "magazines" and "clips", though often used synonymously, refer to different types of devices.

Repeating, semi-automatic, and automatic firearms

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Further information: Single-shot
Main article: Repeating rifle
The French FAMAS, example of a bullpup rifle
The M4 carbine, a modern-day service rifle capable of being fired automatically. It is in service by the U.S. military and has a wide ability for customization.

Many firearms are "single shot": i.e., each time a cartridge is fired, the operator must manually re-cock the firearm and load another cartridge. The classic single-barreled shotgun is a good example. A firearm that can load multiple cartridges as the firearm is re-cocked is considered a "repeating firearm" or simply a "repeater". A lever-action rifle, a pump-action shotgun, and most bolt-action rifles are good examples of repeating firearms. A firearm that automatically re-cocks and reloads the next round with each trigger pull is considered a semi-automatic or autoloading firearm.

The first "rapid firing" firearms were usually similar to the 19th century Gatling gun, which would fire cartridges from a magazine as fast as and as long as the operator turned a crank. Eventually, the "rapid" firing mechanism was perfected and miniaturized to the extent that either the recoil of the firearm or the gas pressure from firing could be used to operate it, thus the operator needed only to pull a trigger (which made the firing mechanisms truly "automatic"). An automatic (or "fully automatic") firearm is one that automatically re-cocks, reloads, and fires as long as the trigger is depressed. An automatic firearm is capable of firing multiple rounds with one pull of the trigger. The Gatling gun may have been the first automatic weapon, though the modern trigger-actuated machine gun was not widely introduced until the First World War with the German "Spandau" and British Lewis Gun. Automatic rifles such as the Browning Automatic Rifle were in common use by the military during the early part of the 20th century, and automatic rifles that fired handgun rounds, known as submachine guns, also appeared in this time. Many modern military firearms have a selective fire option, which is a mechanical switch that allows the firearm be fired either in the semi-automatic or fully automatic mode. In the current M16A2 and M16A4 variants of the U.S.-made M16, continuous fully automatic fire is not possible, having been replaced by an automatic burst of three cartridges (this conserves ammunition and increases controllability). Automatic weapons are largely restricted to military and paramilitary organizations, though many automatic designs are infamous for their use by civilians.

Firearm hazard is quite notable, with a significant impact on the health system. In 2001, for quantification purpose, it was estimated that the cost of fatalities and injuries was US$4700 million per year in Canada (US$170 per Canadian) and US$100,000 million per year in the USA (US$300 per American).

Death

Gun-related homicide and suicide rates in high-income OECD countries, 2010, ordered by total death rates (homicide plus suicide plus other gun-related deaths).

From 1990 to 2015, global deaths from assault by firearm rose from 128,000 to 173,000, however this represents a drop in rate from 2.41/100,000 to 2.35/100,000, as world population has increased by more than two billion. Additionally, there were 32,000 unintentional firearm global deaths in 2015.

In 2017, there were 39,773 gun-related deaths in the United States; over 60% were suicides from firearms. Firearms are the second leading mechanism of injury deaths after motor vehicle accidents.

In the 52 high- and middle-income countries, with a combined population of 1,400 million and not engaged in civil conflict, fatalities due to firearm injuries were estimated at 115,000 people per annum, in the 1990s

Fatalities in 52 countries, mid-1990s

In those 52 countries, firearm is the first method used for homicide (two thirds) but only the second method for suicide (20%)

To prevent unintentional injury, gun safety training includes education on proper firearm storage and firearm-handling etiquette.

Injury

Based on US data, it is estimated that three people are injured for one killed.

Noise

A common hazard of repeated firearm use is noise-induced hearing loss (NIHL). NIHL can result from long-term exposure to noise or from high intensity impact noises such as gunshots. Individuals who shoot guns often have a characteristic pattern of hearing loss referred to as "shooters ear". They often have a high frequency loss with better hearing in the low frequencies and one ear is typically worse than the other. The ear on the side the shooter is holding the gun will receive protection from the sound wave from the shoulder while the other ear remains unprotected and more susceptible to the full impact of the sound wave.

The intensity of a gunshot does vary; lower caliber guns are typically on the softer side while higher caliber guns are often louder. The intensity of a gunshot though typically ranges from 140 dB to 175 dB. Indoor shooting also causes loud reverberations which can also be as damaging as the actual gunshot itself. According to the National Institute on Deafness and Other Communication Disorders, noise above 85 dB can begin to cause hearing loss. While many sounds cause damage over time, at the intensity level of a gunshot (140 dB or louder), damage to the ear can occur instantly.

Hearing protection is the only way to protect the ears against damage from gunfire as there is no option for the shooter to be further from the sound source or to reduce the intensity to a safe level. If possible, observers should attempt to move away, but hearing protection is often still necessary. Different types of shooters may benefit from different types of hearing protection. When target practicing it is recommended to wear an insert plug as well as an over the ear muff. Hunters are recommended to wear electronic type hearing protection which can amplify soft sounds like leaves crunching while reducing the intensity of the gunshot. Custom hearing protection can also be effective and is typically recommended for individuals who are skeet shooting. Hearing protection does have limitations though, and due to the high intensity of guns it is certainly possible for shooters to still develop hearing loss. However, hearing protection typically reduces the amount of damage the ear sustains even if it cannot completely protect the ear.

Firearms include a variety of ranged weapons and there is no agreed-upon definition. For instance English language laws of big legal entities such as the United States, India the European Union and Canada use different definitions. Other English language definitions are provided by international treaties.

United States

In the United States, under 26 USCA § 861[unreliable source] (a), the term ‘‘firearm’’ means

  • (1) a shotgun having a barrel or barrels of less than 18 inches in length;
  • (2) a weapon made from a shotgun if such weapon as modified has an overall length of less than 26 inches or a barrel or barrels of less than 18 inches in length;
  • (3) a rifle having a barrel or barrels of less than 16 inches in length;
  • (4) a weapon made from a rifle if such weapon as modified has an overall length of less than 26 inches or a barrel or barrel of less than 16 inches in length;
  • (5) any other weapon, as defined in subsection (e);
  • (6) a machinegun;
  • (7) any silencer (as defined in section 921 of title 18, United States Code);
    The term ‘‘firearm’’ shall not include an antique firearm or any device (other than a machinegun or destructive device) which, although designed as a weapon, the Secretary finds by reason of the date of its manufacture, value, design, and other characteristics is primarily a collector's item and is not likely to be used as a weapon.

According to the US Bureau of Alcohol, Tobacco, Firearms and Explosives, if gas pressurization is achieved through mechanical gas compression rather than through chemical propellant combustion, then the device is technically an air gun, not a firearm.

India

In India, the arms act, 1959, provides a definition of firearms where "firearms" means arms of any description designed or adapted to discharge a projectile or projectiles of any kind by the action of any explosive or other forms of energy, and includes:

  • (i) artillery, hand-grenades, riot-pistols or weapons of any kind designed or adapted for the discharge of any noxious liquid, gas or other such thing,
  • (ii) accessories for any such firearm designed or adapted to diminish the noise or flash caused by the firing thereof,
  • (iii) parts of, and machinery for manufacturing, fire-arms, and
  • (iv) carriages, platforms and appliances for mounting, transporting and serving artillery;

European Union

In the European Union, a European Directive amended by EU directive 2017/853 set minimum standards regarding civilian firearms acquisition and possession that EU Member States must implement into their national legal systems. In this context, since 2017, firearms are considered as any portable barrelled weapon that expels, is designed to expel or may be converted to expel a shot, bullet or projectile by the action of a combustible propellant. For legal reasons, objects can be considered as a firearm if they have the appearance of a firearm or are made in a way which makes it possible to convert them to a firearm. Member states may be allowed to exclude from their gun control law items such as antique weapons, or specific purposes items which can only be used for that sole purpose.

Canada

In Canada, firearms are defined by the Criminal Code:

firearm means a barrelled weapon from which any shot, bullet or other projectile can be discharged and that is capable of causing serious bodily injury or death to a person, and includes any frame or receiver of such a barrelled weapon and anything that can be adapted for use as a firearm; (arme à feu)

Australia

Australia has a definition of firearms in its 1996 legal act:

"firearm" means any device, whether or not assembled or in parts —

  • (a) which is designed or adapted, or is capable of being modified, to discharge shot or a bullet or other missile by the expansion of gases produced in the device by the ignition of strongly combustible materials or by compressed air or other gases, whether stored in the device in pressurised containers or produced in the device by mechanical means; and
  • (b) whether or not operable or complete or temporarily or permanently inoperable or incomplete

— and which is not —

  • (c) an industrial tool powered by cartridges containing gunpowder or compressed air or other gases which is designed and intended for use for fixing fasteners or plugs or for similar purposes; or
  • (d) a captive bolt humane killer; or
  • (e) a spear gun designed for underwater use; or
  • (f) a device designed for the discharge of signal flares; or
  • (h) a device commonly known as a kiln gun or ringblaster, designed specifically for knocking out or down solid material in kilns, furnaces or cement silos; or
  • (i) a device commonly known as a line thrower designed for establishing lines between structures or natural features and powered by compressed air to other compressed gases and used for rescue purposes, rescue training or rescue demonstration; or
  • (j) a device of a prescribed class;

South Africa

In South Africa, Firearms Control Act [No. 60 of 2000] defines firearm since June 2001, with a 2006 amendment of the definition:

'firearm' means any-

  • (a) device manufactured or designed to propel a bullet or projectile through a barrel or cylinder by means of burning propellant, at a muzzle energy exceeding 8 joules (6 ft-lbs);
  • (b) device manufactured or designed to discharge rim-fire, centre-fire or pin-fire ammunition;
  • (c) device which is not at the time capable of discharging any bullet or projectile, but which can be readily altered to be a firearm within the meaning of paragraph (a) or (b);
  • (d) device manufactured to discharge a bullet or any other projectile of a calibre of 5.6 mm (.22 calibre) or higher at a muzzle energy of more than 8 joules (6 ft-lbs), by means of compressed gas and not by means of burning propellant; or [Para. (d) substituted by s. 1 (b) of Act 43 of 2003.]
  • (e) barrel, frame or receiver of a device referred to in paragraphs (a), (b), (c) or (d), but does not include a muzzle loading firearm or any device contemplated in section 5;

International treaties

An inter-American convention defines firearms as:

  • any barreled weapon which will or is designed to or may be readily converted to expel a bullet or projectile by the action of an explosive, except antique firearms manufactured before the 20th Century or their replicas; or
  • any other weapon or destructive device such as any explosive, incendiary or gas bomb, grenade, rocket, rocket launcher, missile, missile system, or mine.

An international UN protocol on firearms considers that

“Firearm” shall mean any portable barrelled weapon that expels, is designed to expel or may be readily converted to expel a shot, bullet or projectile by the action of an explosive, excluding antique firearms or their replicas. Antique firearms and their replicas shall be defined in accordance with domestic law. In no case, however, shall antique firearms include firearms manufactured after 1899

Firearm science and technology
Firearms and society
List of firearms
Firearms groups around the world
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  39. Flayderman, Norm (2007). Flayderman's Guide to Antique American Firearms and Their Values (9 ed.). Iola, Wisconsin: F+W Media, Inc. p. 775. ISBN 978-0-89689-455-6.
  40. Barnes, Frank C.; Bodinson, Holt (2009). "Amrerican Rimfire Cartridges". Cartridges of the World: A Complete and Illustrated Reference for Over 1500 Cartridges. Iola, Wisconsin: Gun Digest Books. p. 441. ISBN 978-0-89689-936-0. Retrieved25 January 2012.
  41. Shooting section (la section de tir) Archived 2013-11-10 at the Wayback Machine of the official website (in French) of a modern indoor shooting association in Belgium, Les Arquebusier de Visé.
  42. http://whqlibdoc.who.int/hq/2001/WHO_NMH_VIP_01.1.pdf?ua=1
  43. Grinshteyn, Erin; Hemenway, David (March 2016). "Violent Death Rates: The US Compared with Other High-income OECD Countries, 2010". The American Journal of Medicine. 129 (3): 266–273. doi:10.1016/j.amjmed.2015.10.025. PMID 26551975. (Table 4). (PDF).
  44. Wang, Haidong; Naghavi, MohsenA (October 2016). "Global, regional, and national life expectancy, all-cause mortality, and cause-specific mortality for 249 causes of death, 1980–2015: a systematic analysis for the Global Burden of Disease Study 2015". The Lancet. 388 (10053): 1459–1544. doi:10.1016/S0140-6736(16)31012-1. PMC5388903. PMID 27733281.
  45. GBD 2013 Mortality and Causes of Death, Collaborators (17 December 2014). "Global, regional, and national age-sex specific all-cause and cause-specific mortality for 240 causes of death, 1990–2013: a systematic analysis for the Global Burden of Disease Study 2013". Lancet. 385 (9963): 117–71. doi:10.1016/S0140-6736(14)61682-2. PMC4340604. PMID 25530442.
  46. "World Population Prospects: The 2015 Revision". UN Population Division. Archived from the original on December 22, 2015. RetrievedJanuary 10, 2019.. Linked to at Download Files, where it states that the figures are for July 1 of the given year.
  47. "Firearms". Injury Facts. Retrieved31 January 2019.
  48. Anderson, RN; Miniño, AM; Fingerhut, LA; Warner, M; Heinen, MA (June 2, 2004). "Deaths: injuries, 2001". National Vital Statistics System. 52 (21): 1–86. PMID 15222463.
  49. Miniño, AM; Anderson, RN; Fingerhut, LA; Boudreault, MA; Warner, M (January 31, 2006). "Deaths: injuries, 2002". National Vital Statistics System. 54 (10): 1–124. PMID 16485447.
  50. United States Government Accountability Office (September 2017). "Personal Firearms Programs that Promote Safe Storage and Research on Their Effectiveness"(PDF).Cite journal requires |journal= ()
  51. Aero Precision. "Gun Safety and Instruction Manual"(PDF). Archived from the original(PDF) on 2018-04-01. Retrieved2018-04-01.Cite journal requires |journal= ()
  52. "Noise-Induced Hearing Loss". NIDCD. 2015-08-18. Retrieved2019-10-15.
  53. "Gunshots and hearing loss -- why hearing protection is vital". Healthy Hearing. 2007-12-10. Retrieved2019-10-15.
  54. "Recreational Firearm Noise Exposure". American Speech-Language-Hearing Association. Retrieved2019-10-15.
  55. US Federal Govt does not consider an air gun to be a firearm and does not regulate airguns as firearms
  56. European Parliament and the Council (21 May 2008), DIRECTIVE 2008/51/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 21 May 2008 amending Council Directive 91/477/EEC on control of the acquisition and possession of weapons, recital.
  57. "Consolidated federal laws of canada, Criminal Code". 6 May 2021.
  58. "Inter-American Convention Against the Illicit Manufacturing of and Trafficking in Firearms, Ammunition, Explosives, and Other Related Materials".
  59. https://treaties.un.org/doc/source/RecentTexts/18-12_c_E.pdf

Sources

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  • Chase, Kenneth (2003). Firearms: A Global History to 1700. Cambridge University Press. ISBN 978-0-521-82274-9.
  • Cole, Suzanne N. (2017). Association of Firearm Instructors Glossary of Firearm Terms: 2017–2018 Edition. United States: The Association of Firearm Instructors. ISBN 978-0-9982150-3-7.
  • Crosby, Alfred W. (2002). Throwing Fire: Projectile Technology Through History. Cambridge University Press. ISBN 978-0-521-79158-8.
  • Needham, Joseph (1986). Science & Civilisation in China. 7 The Gunpowder Epic. Cambridge University Press. ISBN 978-0-521-30358-3.
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Firearm
Firearm Article Talk Language Watch Edit 160 160 Redirected from Small arms This article is about the projectile weapon For other uses see Firearm disambiguation Not to be confused with air gun This article has multiple issues Please help improve it or discuss these issues on the talk page Learn how and when to remove these template messages This article uses bare URLs which may be threatened by link rot Please consider converting them to full citations to ensure the article remains verifiable and maintains a consistent citation style Several templates and tools are available to assist in formatting such as reFill documentation September 2021 Learn how and when to remove this template message This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Firearm news newspapers books scholar JSTOR March 2018 Learn how and when to remove this template message Learn how and when to remove this template message A firearm is any type of gun designed to be readily carried and used by an individual 1 2 3 The term is legally defined further in different countries see Legal definitions A US Navy sailor fires a Mk 18 Mod 1 carbine at a target The first firearms originated in 10th century China when bamboo tubes containing gunpowder and pellet projectiles were mounted on spears to make the portable fire lance 4 operable by a single person which was later used to good effect in the Siege of De an in 1132 In the 13th century fire lance barrels were replaced with metal tubes and transformed into the metal barreled hand cannon 5 The technology gradually spread throughout Eurasia during the 14th century Older firearms typically used black powder as a propellant but modern firearms use smokeless powder or other propellants Most modern firearms with the notable exception of smoothbore shotguns have rifled barrels to impart spin to the projectile for improved flight stability Modern firearms can be described by their caliber i e bore diameter For pistols and rifles this is given in millimeters or inches e g 7 62mm or 308 in or in the case of shotguns by their gauge e g 12 ga and 20 ga They are also described by the type of action employed e g muzzleloader breechloader lever bolt pump revolver semi automatic fully automatic etc together with the usual means of deportment i e hand held or mechanical mounting Further classification may make reference to the type of barrel used i e rifled and to the barrel length e g 24 inches to the firing mechanism e g matchlock wheellock flintlock or percussion lock to the design s primary intended use e g hunting rifle or to the commonly accepted name for a particular variation e g Gatling gun Shooters aim firearms at their targets with hand eye coordination using either iron sights or optical sights The accurate range of pistols generally does not exceed 100 metres 110 yd 330 ft while most rifles are accurate to 500 metres 550 yd 1 600 ft using iron sights or to longer ranges whilst using optical sights Firearm rounds may be dangerous or lethal well beyond their accurate range the minimum distance for safety is much greater than the specified range for accuracy Purpose built sniper rifles and anti materiel rifles are accurate to ranges of more than 2 000 metres 2 200 yd Contents 1 Types 1 1 Configuration 1 1 1 Handguns 1 1 2 Long guns 1 1 2 1 Rifles and shotguns 1 1 2 2 Carbines 1 1 2 3 Machine guns 1 1 2 4 Sniper rifles 1 1 2 5 Submachine guns 1 1 2 6 Automatic rifles 1 1 2 7 Assault rifles 1 1 2 8 Personal defense weapons 1 1 2 9 Battle rifles 1 2 Function 1 2 1 Manual 1 2 2 Lever action 1 2 3 Pump action 1 2 4 Semi automatic 1 2 5 Automatic 1 2 6 Selective fire 2 History 2 1 Evolution 2 1 1 Early models 2 1 1 1 Fire lances 2 1 1 2 Hand cannons 2 1 1 3 Muskets 2 1 2 Loading techniques 2 1 3 Internal magazines 2 1 4 Detachable magazines 2 1 5 Belt fed weapons 2 1 6 Firing mechanisms 2 1 6 1 Matchlock 2 1 6 2 Wheellock 2 1 6 3 Flintlock 2 1 6 4 Percussion cap 2 1 7 Cartridges 2 1 8 Repeating semi automatic and automatic firearms 3 Health hazards 3 1 Death 3 2 Injury 3 3 Noise 4 Legal definitions 4 1 United States 4 2 India 4 3 European Union 4 4 Canada 4 5 Australia 4 6 South Africa 4 7 International treaties 5 See also 6 References 6 1 SourcesTypes EditFor a more detailed list of common firearms see List of firearms List of most produced firearms and Small Arms and Light Weapons A firearm is a barreled ranged weapon that inflicts damage on targets by launching one or more projectiles driven by rapidly expanding high pressure gas produced by exothermic combustion deflagration of a chemical propellant historically black powder now smokeless powder 1 2 3 In the military firearms are categorized into heavy and light weapons regarding their portability by foot soldiers Light firearms are those that can be readily carried by individual infantrymen i e man portable though they might still require multiple individuals crew served to achieve optimal operational capacity Heavy firearms are those that are too large and heavy to be transported on foot or too unstable against recoil and thus require the support of a weapons platform e g a fixed mount wheeled carriage vehicle aircraft or water vessel to be tactically mobile or useful The subset of light firearms that only use kinetic projectiles and are compact enough to be operated to full capacity by a single infantryman individual served are also referred to as small arms Such firearms include handguns such as revolvers pistols and derringers and long guns such as rifles including many subtypes such as anti material rifles sniper rifles designated marksman rifles battle rifles assault rifles and carbines shotguns submachine guns personal defense weapons and squad automatic weapons light machine guns 6 Among the world s arms manufacturers the top firearms manufacturers are Browning Remington Colt Ruger Smith amp Wesson Savage Mossberg USA Heckler amp Koch SIG Sauer Walther Germany CZUB Czech Republic Glock Steyr Mannlicher Austria FN Herstal Belgium Beretta Italy Norinco China Tula Arms and Kalashnikov Russia while former top producers included Mauser Springfield Armory and Rock Island Armory under Armscor Philippines citation needed As of 2018 update the Small Arms Survey reported that there were over one billion firearms distributed globally of which 857 million about 85 percent were in civilian hands 7 8 U S civilians alone account for 393 million about 46 percent of the worldwide total of civilian held firearms 8 This amounts to 120 5 firearms for every 100 residents 8 The world s armed forces control about 133 million about 13 percent of the global total of small arms of which over 43 percent belong to two countries the Russian Federation 30 3 million and China 27 5 million 7 Law enforcement agencies control about 23 million about 2 percent of the global total of small arms 7 Configuration Edit Handguns Edit Main article Handgun A Colt Single Action Army revolver A Glock 17 semi automatic pistol Handguns are guns that can be used with a single hand and are the smallest of all firearms However the legal definition of a handgun varies between countries and regions For example in South African law a handgun means a pistol or revolver which can be held in and discharged with one hand 9 In Australia the gun law considers a handgun as a firearm carry able or concealable about the person or capable of being raised and fired by one hand or not exceeding 65 cm 26 in 10 In the United States Title 18 and the ATF considers a handgun as a firearm which has a short stock and is designed to be held and fired by the use of a single hand 11 12 There are two common types of handguns revolvers and semi automatic pistols Revolvers have a number of firing chambers or charge holes in a revolving cylinder each chamber in the cylinder is loaded with a single cartridge or charge Semi automatic pistols have a single fixed firing chamber machined into the rear of the barrel and a magazine so they can be used to fire more than one round Each press of the trigger fires a cartridge using the energy of the cartridge to activate a mechanism so that the next cartridge may be fired immediately This is opposed to double action revolvers which accomplish the same end using a mechanical action linked to the trigger pull With the invention of the revolver in 1818 handguns capable of holding multiple rounds became popular Certain designs of auto loading pistol appeared beginning in the 1870s and had largely supplanted revolvers in military applications by the end of World War I By the end of the 20th century most handguns carried regularly by military police and civilians were semi automatic although revolvers were still widely used Generally speaking military and police forces use semi automatic pistols due to their high magazine capacities and ability to rapidly reload by simply removing the empty magazine and inserting a loaded one Revolvers are very common among handgun hunters because revolver cartridges are usually more powerful than similar caliber semi automatic pistol cartridges which are designed for self defense and the strength simplicity and durability of the revolver design is well suited to outdoor use Revolvers especially in 22 LR and 38 Special 357 Magnum are also common concealed weapons in jurisdictions allowing this practice because their simple mechanics make them smaller than many autoloaders while remaining reliable Both designs are common among civilian gun owners depending on the owner s intention self defense hunting target shooting competitions collecting etc Long guns Edit Main article Long gun A long gun is any firearm with a notably long barrel typically a length of 10 to 30 inches 250 to 760 mm there are restrictions on minimum barrel length in many jurisdictions maximum barrel length is usually a matter of practicality Unlike a handgun long guns are designed to be held and fired with both hands while braced against either the hip or the shoulder for better stability The receiver and trigger group is mounted into a stock made of wood plastic metal or composite material which has sections that form a foregrip rear grip and optionally but typically a shoulder mount called the butt Early long arms from the Renaissance up to the mid 19th century were generally smoothbore firearms that fired one or more ball shot called muskets or arquebus depending on caliber and firing mechanism Rifles and shotguns Edit Main articles Rifle and Shotgun Springfield Armory M1903 rifle Most modern long guns are either rifles or shotguns Both are the successors of the musket diverging from their parent weapon in distinct ways A rifle is so named for the spiral grooves riflings machined into the inner bore surface of its barrel which imparts a gyroscopically stabilizing spin to the bullets that it fires Shotguns are predominantly smoothbore firearms designed to fire a number of shot in each discharge pellet sizes commonly ranging between 2 mm 9 birdshot and 8 4 mm 00 double aught buckshot Shotguns are also capable of firing single solid projectiles called slugs or specialty often less lethal rounds such as bean bags tear gas or breaching rounds Rifles produce a single point of impact with each firing but a long range and high accuracy while shotguns produce a cluster of impact points with considerably less range and accuracy However the larger impact area of shotguns can compensate for reduced accuracy since shot spreads during flight consequently in hunting shotguns are generally used for fast flying game birds Rifles and shotguns are commonly used for hunting and often also for home defense security guard and law enforcement Usually large game are hunted with rifles although shotguns can be used particularly with slugs while birds are hunted with shotguns Shotguns are sometimes preferred for defending a home or business due to their wide impact area multiple wound tracks when using buckshot shorter range and reduced penetration of walls when using lighter shot which significantly reduces the likelihood of unintended harm although the handgun is also common A US Marine firing a Mossberg 500 shotgun There are a variety of types of rifles and shotguns based on the method they are reloaded Bolt action and lever action rifles are manually operated Manipulation of the bolt or the lever causes the spent cartridge to be removed the firing mechanism recocked and a fresh cartridge inserted These two types of action are almost exclusively used by rifles Slide action commonly called pump action rifles and shotguns are manually cycled by shuttling the foregrip of the firearm back and forth This type of action is typically used by shotguns but several major manufacturers make rifles that use this action Both rifles and shotguns also come in break action varieties that do not have any kind of reloading mechanism at all but must be hand loaded after each shot Both rifles and shotguns come in single and double barreled varieties however due to the expense and difficulty of manufacturing double barreled rifles are rare Double barreled rifles are typically intended for African big game hunts where the animals are dangerous ranges are short and speed is of the essence Very large and powerful calibers are normal for these firearms Rifles have been in nationally featured marksmanship events in Europe and the United States since at least the 18th century when rifles were first becoming widely available One of the earliest purely American rifle shooting competitions took place in 1775 when Daniel Morgan was recruiting sharpshooters in Virginia for the impending American Revolutionary War In some countries rifle marksmanship is still a matter of national pride Some specialized rifles in the larger calibers are claimed to have an accurate range of up to about 1 mile 1 600 m although most have considerably less In the second half of the 20th century competitive shotgun sports became perhaps even more popular than riflery largely due to the motion and immediate feedback in activities such as skeet trap and sporting clays In military use bolt action rifles with high power scopes are common as sniper rifles however by the Korean War the traditional bolt action and semi automatic rifles used by infantrymen had been supplemented by select fire designs known as automatic rifles Carbines Edit Main article Carbine A carbine is a firearm similar to a rifle in form and intended usage but generally shorter or smaller than the typical full size hunting or battle rifle of a similar time period and sometimes using a smaller or less powerful cartridge Carbines were and are typically used by members of the military in roles that are expected to engage in combat but where a full size rifle would be an impediment to the primary duties of that soldier vehicle drivers field commanders and support staff airborne troops engineers etc Carbines are also common in law enforcement and among civilian owners where similar size space and or power concerns may exist Carbines like rifles can be single shot repeating action semi automatic or select fire fully automatic generally depending on the time period and intended market Common historical examples include the Winchester Model 1892 Lee Enfield Jungle Carbine SKS M1 carbine no relation to the larger M1 Garand and M4 carbine a more compact variant of the current M16 rifle Modern U S civilian carbines include compact customizations of the AR 15 Ruger Mini 14 Beretta Cx4 Storm Kel Tec SUB 2000 bolt action rifles generally falling under the specifications of a scout rifle and aftermarket conversion kits for popular pistols including the M1911 and Glock models Machine guns Edit Main article Machine gun MG 42 general purpose machine gun with retracted bipod A machine gun is a fully automatic firearm most often separated from other classes of automatic weapons by the use of belt fed ammunition though some designs employ drum pan or hopper magazines generally in a rifle inspired caliber ranging between 5 56 45mm NATO 223 Remington for a light machine gun to as large as 50 BMG or even larger for crewed or aircraft weapons Although not widely fielded until World War I early machine guns were being used by militaries in the second half of the 19th century Notables in the U S arsenal during the 20th century included the M2 Browning 50 caliber heavy machine gun M1919 Browning 30 caliber medium machine gun and the M60 7 62 51mm NATO general purpose machine gun which came into use around the Vietnam War Machine guns of this type were originally defensive firearms crewed by at least two men mainly because of the difficulties involved in moving and placing them their ammunition and their tripod In contrast modern light machine guns such as the FN Minimi are often wielded by a single infantryman They provide a large ammunition capacity and a high rate of fire and are typically used to give suppressing fire during infantry movement Accuracy on machine guns varies based on a wide number of factors from design to manufacturing tolerances most of which have been improved over time Machine guns are often mounted on vehicles or helicopters and have been used since World War I as offensive firearms in fighter aircraft and tanks e g for air combat or suppressing fire for ground troop support The definition of a machine gun is different in U S law The National Firearms Act and Firearm Owners Protection Act define a machine gun in the United States code Title 26 Subtitle E Chapter 53 Subchapter B Part 1 5845 as any firearm which shoots automatically more than one shot without manual reloading by a single function of the trigger Machine gun is therefore largely synonymous with automatic weapon in the U S civilian parlance covering all automatic firearms Sniper rifles Edit Main article Sniper rifle The Accuracy International Arctic Warfare series of sniper rifles is a standard issue in the armies of several countries including those of Britain Ireland and Germany shown The definition of a sniper rifle is disputed among military police and civilian observers alike however most generally define a sniper rifle as a high powered semi automatic bolt action precision rifle with an accurate range further than that of a standard rifle These are often purpose built for their applications For example a police sniper rifle may differ in specs from a military rifle Police snipers generally do not engage targets at extreme range but rather a target at medium range They may also have multiple targets within the shorter range and thus a semi automatic model is preferred to a bolt action They also may be more compact than mil spec rifles as police marksmen may need more portability On the other hand a military rifle is more likely to use a higher powered cartridge to defeat body armor or medium light cover They are more commonly but not a lot more bolt action as they are simpler to build and maintain Also due to fewer moving and overall parts they are much more reliable under adverse conditions They may also have a more powerful scope to acquire targets further away Overall sniper units never became prominent until World War I when the Germans displayed their usefulness on the battlefield Since then they have become irrevocably embedded in warfare Examples of sniper rifles include the Accuracy International AWM Sako TRG 42 and the CheyTac M200 Examples of specialized sniper cartridges include the 338 Lapua Magnum 300 Winchester Magnum and 408 CheyTac rounds Submachine guns Edit Main article Submachine gun Czechoslovak 7 65 mm submachine gun Skorpion vz 61 designed in 1959 A submachine gun is a magazine fed firearm usually smaller than other automatic firearms that fires pistol caliber ammunition for this reason certain submachine guns can also be referred to as machine pistols especially when referring to handgun sized designs such as the Skorpion vz 61 and Glock 18 Well known examples are the Israeli Uzi and Heckler amp Koch MP5 which use the 9 19mm Parabellum cartridge and the American Thompson submachine gun which fires 45 ACP Because of their small size and limited projectile penetration compared to high power rifle rounds submachine guns are commonly favored by military paramilitary and police forces for close quarters engagements such as inside buildings in urban areas or in trench complexes Suomi M31 submachine with a 70 round drum magazine attached 20 and 50 round box magazines Submachine guns were originally about the size of carbines Because they fire pistol ammunition they have limited long range use but in close combat can be used in fully automatic in a controllable manner due to the lighter recoil of the pistol ammunition They are also extremely inexpensive and simple to build in time of war enabling a nation to quickly arm its military In the latter half of the 20th century submachine guns were being miniaturized to the point of being only slightly larger than some large handguns The most widely used submachine gun at the end of the 20th century was the Heckler amp Koch MP5 The MP5 is actually designated as a machine pistol by Heckler amp Koch MP5 stands for Maschinenpistole 5 or Machine Pistol 5 although some reserve this designation for even smaller submachine guns such as the MAC 10 and Glock 18 which are about the size and shape of pistols Automatic rifles Edit Main article Automatic rifle An automatic rifle is a magazine fed firearm wielded by a single infantryman that is chambered for rifle cartridges and capable of automatic fire The M1918 Browning Automatic Rifle was the first U S infantry weapon of this type and was generally used for suppressive or support fire in the role now usually filled by the light machine gun Other early automatic rifles include the Fedorov Avtomat and the Huot Automatic Rifle Later German forces fielded the Sturmgewehr 44 during World War II a light automatic rifle firing a reduced power intermediate cartridge This design was to become the basis for the assault rifle subclass of automatic weapons as contrasted with battle rifles which generally fire a traditional full power rifle cartridge Assault rifles Edit Main article Assault rifle The AK 47 is one of the most widely produced and used assault rifles in the world In World War II Germany introduced the StG 44 and brought to the forefront of firearm technology what eventually became the class of firearm most widely adopted by the military the assault rifle An assault rifle is usually slightly smaller than a battle rifle such as the American M14 but the chief differences defining an assault rifle are select fire capability and the use of a rifle round of lesser power known as an intermediate cartridge Soviet engineer Mikhail Kalashnikov quickly adapted the German concept using a less powerful 7 62 39mm cartridge derived from the standard 7 62 54mmR Russian battle rifle round to produce the AK 47 which has become the world s most widely used assault rifle Soon after World War II the Automatic Kalashnikov AK 47 assault rifle began to be fielded by the Soviet Union and its allies in the Eastern Bloc as well as by nations such as China North Korea and North Vietnam In the United States the assault rifle design was later in coming the replacement for the M1 Garand of WWII was another John Garand design chambered for the new 7 62 51mm NATO cartridge the select fire M14 which was used by the U S military until the 1960s The significant recoil of the M14 when fired in full automatic mode was seen as a problem as it reduced accuracy and in the 1960s it was replaced by Eugene Stoner s AR 15 which also marked a switch from the powerful 30 caliber cartridges used by the U S military up until early in the Vietnam War to the much less powerful but far lighter and light recoiling 223 caliber 5 56mm intermediate cartridge The military later designated the AR 15 as the M16 The civilian version of the M16 continues to be known as the AR 15 and looks exactly like the military version although to conform to ATF regulations in the U S it lacks the mechanism that permits fully automatic fire Variants of both of the M16 and AK 47 are still in wide international use today though other automatic rifle designs have since been introduced A smaller version of the M16A2 the M4 carbine is widely used by U S and NATO tank and vehicle crews airbornes support staff and in other scenarios where space is limited The IMI Galil an Israeli designed weapon based on the action of the AK 47 is in use by Israel Italy Burma the Philippines Peru and Colombia Swiss Arms of Switzerland produces the SIG SG 550 assault rifle used by France Chile and Spain among others and Steyr Mannlicher produces the AUG a bullpup rifle in use in Austria Australia New Zealand Ireland and Saudi Arabia among other nations Modern designs call for compact weapons retaining firepower The bullpup design by mounting the magazine behind the trigger unifies the accuracy and firepower of the traditional assault rifle with the compact size of the submachine gun though submachine guns are still used examples are the French FAMAS and the British SA80 Personal defense weapons Edit Main article Personal defense weapon FN P90 PDW A recently developed class of firearm is the personal defense weapon or PDW which is in simplest terms a submachine gun designed to fire ammunitions with ballistic performance similar to rifle cartridges While a submachine gun is desirable for its compact size and ammunition capacity its pistol cartridges lack the penetrating capability of a rifle round Conversely rifle bullets can pierce light armor and are easier to shoot accurately but even a carbine such as the Colt M4 is larger and or longer than a submachine gun making it harder to maneuver in close quarters The solution many firearms manufacturers have presented is a weapon resembling a submachine gun in size and general configuration but which fires a higher powered armor penetrating round often specially designed for the weapon thus combining the advantages of a carbine and submachine gun This also earned the PDWs an infrequently used nickname the submachine carbines The FN P90 and Heckler amp Koch MP7 are most famous examples of PDWs Battle rifles Edit Main article Battle rifle Belgian FN SCAR H Battle rifles are another subtype of rifle usually defined as selective fire rifles that use full power rifle cartridges examples of which include the 7 62x51mm NATO 7 92x57mm Mauser and 7 62x54mmR These serve similar purposes as assault rifles as they both are usually employed by ground infantry However some prefer battle rifles due to their more powerful cartridge despite added recoil Some semi automatic sniper rifles are configured from battle rifles Function Edit This section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed March 2018 Learn how and when to remove this template message Main article Firearm action Firearms are also categorized by their functioning cycle or action which describes its loading firing and unloading cycle Manual Edit The earliest evolution of the firearm there are many types of manual action firearms These can be divided into two basic categories single shot and repeating A single shot firearm can only be fired once per equipped barrel before it must be reloaded or charged via an external mechanism or series of steps A repeating firearm can be fired multiple times but can only be fired once with each subsequent pull of the trigger Between trigger pulls the firearm s action must be reloaded or charged via an internal mechanism Lever action Edit A gun which has a lever that is pulled down then back up to expel the old cartridge then load a new round Pump action Edit Pump action weapons are primarily shotguns A pump action is created when the user slides a lever usually a grip and it brings a new round in the chamber while expelling the old one 13 Semi automatic Edit Main article Semi automatic firearm A semi automatic self loading or auto loader firearm is one that performs all steps necessary to prepare it for firing again after a single discharge until cartridges are no longer available in the weapon s feed device or magazine Auto loaders fire one round with each pull of the trigger Some people confuse the term with fully automatic firearms See next While some semi automatic rifles may resemble military style firearms they are not properly classified Assault Weapons which refers to those that continue to fire until the trigger is no longer depressed Automatic Edit Main article Automatic firearm An automatic firearm or fully automatic fully auto or full auto is generally defined as one that continues to load and fire cartridges from its magazine as long as the trigger is depressed and until the magazine is depleted of available ammunition The first weapon generally considered in this category is the Gatling gun originally a carriage mounted crank operated firearm with multiple rotating barrels that was fielded in the American Civil War The modern trigger actuated machine gun began with various designs developed in the late 19th century and fielded in World War I such as the Maxim gun Lewis Gun and MG 08 Spandau Most automatic weapons are classed as long guns as the ammunition used is of similar type as for rifles and the recoil of the weapon s rapid fire is better controlled with two hands but handgun sized automatic weapons also exist generally in the submachine gun or machine pistol class Selective fire Edit Main article Selective fire Selective fire or select fire means the capability of a weapon s fire control to be adjusted in either semi automatic fully automatic firing modes or 3 round burst The modes are chosen by means of a selector which varies depending on the weapon s design Some selective fire weapons have burst fire mechanisms built in to limit the maximum number of shots fired in fully automatic mode with most common limits being two or three rounds per trigger pull The presence of selective fire modes on firearms allows more efficient use of ammunition for specific tactical needs either precision aimed or suppressive fire This capability is most commonly found on military weapons of the 20th and 21st centuries most notably the assault rifles History Edit Hand cannon from the Chinese Yuan Dynasty 1271 1368 Main article History of the firearm See also History of gunpowder The first primitive firearms were invented about 1250 AD in China when the man portable fire lance a bamboo or metal tube that could shoot ignited gunpowder was combined with projectiles such as scrap metal broken porcelain or darts arrows 4 14 The earliest depiction of a firearm is a sculpture from a cave in Sichuan China The sculpture dates to the 12th century and is of a figure carrying a vase shaped bombard with flames and a cannonball coming out of it 15 31 32 The oldest surviving gun a hand cannon made of bronze has been dated to 1288 because it was discovered at a site in modern day Acheng District Heilongjiang China where the Yuan Shi records that battles were fought at that time 16 The firearm had a 6 9 inch barrel of a 1 inch diameter a 2 6 inch chamber for the gunpowder and a socket for the firearm s handle It is 13 4 inches long and 7 8 pounds without the handle which would have been made of wood 15 32 The Arabs and Mamluks had firearms in the late 13th century 17 18 19 In the 14th century firearms were obtained by the Europeans 15 1 The Koreans adopted firearms from the Chinese in the 14th century The Iranians first Aq Qoyunlu and Safavids and Indians first Mughals all got them no later than the 15th century from the Ottoman Turks The people of Nusantara archipelago of Southeast Asia used long arquebus at least by the last quarter of 15th century 20 23 The istinggar a result of Indo Portuguese gun making traditions Even though the knowledge of making gunpowder based weapon in Nusantara archipelago has been known after the failed Mongol invasion of Java 1293 and the predecessor of firearms the pole gun bedil tombak was recorded as being used by Java in 1413 21 22 245 the knowledge of making true firearms came much later after the middle of 15th century It was brought by the Islamic nations of West Asia most probably the Arabs The precise year of introduction is unknown but it may be safely concluded to be no earlier than 1460 20 23 Before the arrival of the Portuguese in Southeast Asia the natives already possessed firearms the Java arquebus 23 A The matchlock gun with button for trigger which came to Lisbon from Bohemia used by the Portuguese until the conquest of Goa in 1510 B The Indo Portuguese matchlock gun resulted from the combination of Portuguese and Goan gunmaking C The Japanese matchlock gun appeared as a copy of the first firearm introduced in the Japanese islands The technology of firearm in Southeast Asia further improved after the Portuguese capture of Malacca 1511 24 Starting in the 1513 the tradition of German Bohemian gun making were merged with Turkish gun making traditions 25 39 41 This resulted in Indo Portuguese tradition of matchlocks Indian craftsmen modified the design by introducing a very short almost pistol like buttstock held against the cheek not the shoulder when aiming They also reduced the caliber and made the gun lighter and more balanced This was a hit with the Portuguese who did a lot of fighting aboard ship and on river craft and valued a more compact gun 26 41 27 The Malaccan gunfounders check spelling compared as being in the same level with those of Germany quickly adapted these new firearms and thus a new type of arquebus the istinggar appeared 28 385 The Japanese did not acquire firearms until the 16th century and then from the Portuguese rather than the Chinese 15 31 32 A musketeer 1608 The development behind firearms accelerated during the 19th and 20th centuries Breech loading became more or less a universal standard for the reloading of most hand held firearms and continues to be so with some notable exceptions such as mortars Instead of loading individual rounds into weapons magazines holding multiple munitions were adopted these aided rapid reloading Automatic and semi automatic firing mechanisms meant that a single soldier could fire many more rounds in a minute than a vintage weapon could fire over the course of a battle Polymers and alloys in firearm construction made weaponry progressively lighter and thus easier to deploy Ammunition changed over the centuries from simple metallic ball shaped projectiles that rattled down the barrel to bullets and cartridges manufactured to high precision Especially in the past century has particular attention been devoted to accuracy and sighting to make firearms altogether far more accurate than ever before More than any single factor though firearms have proliferated due to the advent of mass production enabling arms manufacturers to produce large quantities of weaponry to a consistent standard citation needed Velocities of bullets increased with the use of a jacket of a metal such as copper or copper alloys that covered a lead core and allowed the bullet to glide down the barrel more easily than exposed lead Such bullets are designated as full metal jacket FMJ Such FMJ bullets are less likely to fragment on impact and are more likely to traverse through a target while imparting less energy Hence FMJ bullets impart less tissue damage than non jacketed bullets that expand Dougherty and Eidt 2009 This led to their adoption for military use by countries adhering to the Hague Convention in 1899 29 That said the basic principle behind firearm operation remains unchanged to this day A musket of several centuries ago is still similar in principle to a modern day assault rifle using the expansion of gases to propel projectiles over long distances albeit less accurately and rapidly 30 Evolution Edit Early models Edit Fire lances Edit Main article Fire lance The Chinese fire lance from the 10th century was the direct predecessor to the modern concept of the firearm It was not a gun itself but an addition to the soldiers spears Originally it consisted of paper or bamboo barrels that would have incendiary gunpowder within it that could be lit one time and would project flames at the enemy Sometimes the Chinese troops would place small projectiles within the barrel that would also be projected when the gunpowder was lit but most of the explosive force would create flames Later the barrel was changed to be made of metal so that a more explosive gunpowder could be used and put more force into the propulsion of the projectile 15 31 32 Hand cannons Edit This section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed March 2018 Learn how and when to remove this template message Main article Hand cannon Hand cannon being fired from a stand Belli Fortis manuscript by Konrad Kyeser 1400 The original predecessor of all firearms the Chinese fire lance when and hand cannon were loaded with gunpowder and the shot initially lead shot later replaced by cast iron citation needed through the muzzle while a fuse was placed at the rear This fuse was lit causing the gunpowder to ignite and propel the cannonball In military use the standard hand cannon was tremendously powerful while also being somewhat useless citation needed due to relative inability of the gunner to aim the weapon or control the ballistic properties of the projectile Recoil could be absorbed by bracing the barrel against the ground using a wooden support the forerunner of the stock Neither the quality or amount of gunpowder nor the consistency in projectile dimensions were controlled with resulting inaccuracy in firing due to windage variance in gunpowder composition and the difference in diameter between the bore and the shot The hand cannons were replaced by lighter carriage mounted artillery pieces and ultimately the arquebus In the 1420s gunpowder was used to propel missiles from hand held tubes during the Hussite revolt 31 Muskets Edit Main article Musket Muzzle loading muskets smooth bored long guns were among the first firearms developed when The firearm was loaded through the muzzle with gunpowder optionally some wadding and then a bullet usually a solid lead ball but musketeers could shoot stones when they ran out of bullets Greatly improved muzzleloaders usually rifled instead of smooth bored are manufactured today and have many enthusiasts many of whom hunt large and small game with their guns Muzzleloaders have to be manually reloaded after each shot a skilled archer could fire multiple arrows faster than most early muskets could be reloaded and fired although by the mid 18th century when muzzleloaders became the standard small armament of the military a well drilled soldier could fire six rounds in a minute using prepared cartridges in his musket Before then effectiveness of muzzleloaders was hindered by both the low reloading speed and before the firing mechanism was perfected the very high risk posed by the firearm to the person attempting to fire it citation needed One interesting solution to the reloading problem was the Roman Candle Gun with superposed loads This was a muzzleloader in which multiple charges and balls were loaded one on top of the other with a small hole in each ball to allow the subsequent charge to be ignited after the one ahead of it was ignited It was neither a very reliable nor popular firearm but it enabled a form of automatic fire long before the advent of the machine gun 32 Loading techniques Edit This section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed March 2018 Learn how and when to remove this template message Main article Muzzleloader Percussion cap and early bolt action form Most early firearms were muzzle loading This form of loading has several disadvantages such as a slow rate of fire and having to expose oneself to enemy fire to reload as the weapon had to be pointed upright so the powder could be poured through the muzzle into the breech followed by the ramming the projectile into the breech As effective methods of sealing the breech were developed through the development of sturdy weatherproof self contained metallic cartridges muzzle loaders were replaced by single shot breech loaders Eventually single shot weapons were replaced by the following repeater type weapons Internal magazines Edit This section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed March 2018 Learn how and when to remove this template message Main article Magazine firearms Many firearms made in the late 19th century through the 1950s used internal magazines to load the cartridge into the chamber of the weapon The most notable and revolutionary weapons of this period appeared during the U S Civil War and they were the Spencer and Henry repeating rifles Both used fixed tubular magazines the former having the magazine in the buttstock and the latter under the barrel which allowed a larger capacity Later weapons used fixed box magazines that could not be removed from the weapon without disassembling the weapon itself Fixed magazines permitted the use of larger cartridges and eliminated the hazard of having the bullet of one cartridge butting next to the primer or rim of another cartridge These magazines are loaded while they are in the weapon often using a stripper clip A clip is used to transfer cartridges into the magazine Some notable weapons that use internal magazines include the Mosin Nagant the Mauser Kar 98k the Springfield M1903 the M1 Garand and the SKS Firearms that have internal magazines are usually but not always rifles Some exceptions to this include the Mauser C96 pistol which uses an internal magazine and the Breda 30 an Italian light machine gun Detachable magazines Edit This section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed March 2018 Learn how and when to remove this template message Many modern firearms use what are called detachable or box magazines as their method of chambering a cartridge Detachable magazines can be removed from the weapon without disassembling the firearms usually by pushing the magazine release Belt fed weapons Edit This section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed March 2018 Learn how and when to remove this template message Main article Belt firearm A belt or ammunition belt is a device used to retain and feed cartridges into a firearm commonly used on machine guns Belts were originally composed of canvas or cloth with pockets spaced evenly to allow the belt to be mechanically fed into the gun These designs were prone to malfunctions due to the effects of oil and other contaminants altering the belt Later belt designs used permanently connected metal links to retain the cartridges during feeding These belts were more tolerant to exposure to solvents and oil Some notable weapons that use belts are the M240 the M249 the M134 Minigun and the PK Machine Gun Firing mechanisms Edit Further information Trigger firearms and Firearm action Matchlock Edit Main article Matchlock Various Japanese samurai Edo period matchlocks tanegashima Matchlocks were the first and simplest firearms firing mechanisms developed Using the matchlock mechanism the powder in the gun barrel was ignited by a piece of burning cord called a match The match was wedged into one end of an S shaped piece of steel As the trigger often actually a lever was pulled the match was brought into the open end of a touch hole at the base of the gun barrel which contained a very small quantity of gunpowder igniting the main charge of gunpowder in the gun barrel The match usually had to be relit after each firing The main parts to the matchlock firing mechanism are the pan match arm and trigger 33 A benefit of the pan and arm swivel being moved to the side of the gun was it gave a clear line of fire 34 An advantage to the matchlock firing mechanism is that it did not misfire However it also came with some disadvantages One disadvantage was if it was raining the match could not be kept lit to fire the weapon Another issue with the match was it could give away the position of soldiers because of the glow sound and smell 35 While European pistols were equipped with wheellock and flintlock mechanism Asian pistols were equipped with matchlock mechanism 36 Wheellock Edit This section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed March 2018 Learn how and when to remove this template message Main article Wheellock A wheellock pistol mechanism from the 17th century The wheellock action a successor to the matchlock predated the flintlock Despite its many faults the wheellock was a significant improvement over the matchlock in terms of both convenience and safety since it eliminated the need to keep a smoldering match in proximity to loose gunpowder It operated using a small wheel much like that on cigarette lighters which was wound up with a key before use and which when the trigger was pulled spun against a flint creating the shower of sparks that ignited the powder in the touch hole Supposedly invented by Leonardo da Vinci the Italian Renaissance man the wheellock action was an innovation that was not widely adopted due to the high cost of the clockwork mechanism Flintlock Edit This section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed March 2018 Learn how and when to remove this template message Main article Flintlock Flintlock mechanism The flintlock action was a major innovation in firearm design The spark used to ignite the gunpowder in the touch hole was supplied by a sharpened piece of flint clamped in the jaws of a cock which when released by the trigger struck a piece of steel called the frizzen to create the necessary sparks The spring loaded arm that holds a piece of flint or pyrite is referred to as a cock because of its resemblance to a rooster The cock had to be manually reset after each firing and the flint had to be replaced periodically due to wear from striking the frizzen See also flintlock mechanism snaphance Miquelet lock The flintlock was widely used during the 17th 18th and 19th centuries in both muskets and rifles Percussion cap Edit This section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed March 2018 Learn how and when to remove this template message Further information Percussion cap and Caplock mechanism Percussion caps caplock mechanisms coming into wide service in the early 19th century were a dramatic improvement over flintlocks With the percussion cap mechanism the small primer charge of gunpowder used in all preceding firearms was replaced by a completely self contained explosive charge contained in a small brass cap The cap was fastened to the touch hole of the gun extended to form a nipple and ignited by the impact of the gun s hammer The hammer is roughly the same as the cock found on flintlocks except that it does not clamp onto anything In the case of percussion caps the hammer was hollow on the end to fit around the cap in order to keep the cap from fragmenting and injuring the shooter Once struck the flame from the cap in turn ignited the main charge of gunpowder as with the flintlock but there was no longer any need to charge the touch hole with gunpowder and even better the touch hole was no longer exposed to the elements As a result the percussion cap mechanism was considerably safer far more weatherproof and vastly more reliable cloth bound cartridges containing a premeasured charge of gunpowder and a ball had been in regular military service for many years but the exposed gunpowder in the entry to the touch hole had long been a source of misfires All muzzleloaders manufactured since the second half of the 19th century use percussion caps except those built as replicas of the flintlock or earlier firearms Cartridges Edit This section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed March 2018 Learn how and when to remove this template message Main article Cartridge firearms Further information Magazine firearms and Ammunition From Left to Right A 577 Snider cartridge 1867 a 577 450 Martini Henry cartridge 1871 a later drawn brass 577 450 Martini Henry cartridge and a 303 British Mk VII SAA Ball cartridge Frenchman Louis Nicolas Flobert invented the first rimfire metallic cartridge in 1845 His cartridge consisted of a percussion cap with a bullet attached to the top 37 38 Flobert then made what he called parlor guns for this cartridge as these rifles and pistols were designed to be shot in indoor shooting parlors in large homes 39 40 These 6mm Flobert cartridges do not contain any powder the only propellant substance contained in the cartridge is the percussion cap 41 In English speaking countries the 6mm Flobert cartridge corresponds to 22 BB Cap and 22 CB Cap ammunition These cartridges have a relatively low muzzle velocity of around 700 ft s 210 m s This was major innovation in firearms ammunition previously delivered as separate bullets and powder was combined in a single metallic usually brass cartridge containing a percussion cap powder and a bullet in one weatherproof package The main technical advantage of the brass cartridge case was the effective and reliable sealing of high pressure gasses at the breech as the gas pressure forces the cartridge case to expand outward pressing it firmly against the inside of the gun barrel chamber This prevents the leakage of hot gas which could injure the shooter The brass cartridge also opened the way for modern repeating arms by uniting the bullet gunpowder and primer into one assembly that could be fed reliably into the breech by a mechanical action in the firearm Before this a cartridge was simply a premeasured quantity of gunpowder together with a ball in a small cloth bag or rolled paper cylinder which also acted as wadding for the charge and ball This early form of cartridge had to be rammed into the muzzleloader s barrel and either a small charge of gunpowder in the touch hole or an external percussion cap mounted on the touch hole ignited the gunpowder in the cartridge Cartridges with built in percussion caps called primers continue to this day to be the standard in firearms In cartridge firing firearms a hammer or a firing pin struck by the hammer strikes the cartridge primer which then ignites the gunpowder within The primer charge is at the base of the cartridge either within the rim a rimfire cartridge or in a small percussion cap embedded in the center of the base a centerfire cartridge As a rule centerfire cartridges are more powerful than rimfire cartridges operating at considerably higher pressures than rimfire cartridges Centerfire cartridges are also safer as a dropped rimfire cartridge has the potential to discharge if its rim strikes the ground with sufficient force to ignite the primer This is practically impossible with most centerfire cartridges Nearly all contemporary firearms load cartridges directly into their breech Some additionally or exclusively load from a magazine that holds multiple cartridges A magazine is defined as a part of the firearm which exists to store ammunition and assist in its feeding by the action into the breech such as through the rotation of a revolver s cylinder or by spring loaded platforms in most pistol and rifle designs Some magazines such as that of most centerfire hunting rifles and all revolvers are internal to and inseparable from the firearm and are loaded by using a clip A clip often mistakingly used to refer to a detachable magazine is a device that holds the ammunition by the rim of the case and is designed to assist the shooter in reloading the firearm s magazine Examples include revolver speedloaders the stripper clip used to aid loading rifles such as the Lee Enfield or Mauser 98 and the en bloc clip used in loading the M1 Garand In this sense magazines and clips though often used synonymously refer to different types of devices Repeating semi automatic and automatic firearms Edit This section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed March 2018 Learn how and when to remove this template message Further information Single shot Main article Repeating rifle Main article Semi automatic firearm The French FAMAS example of a bullpup rifle The M4 carbine a modern day service rifle capable of being fired automatically It is in service by the U S military and has a wide ability for customization Many firearms are single shot i e each time a cartridge is fired the operator must manually re cock the firearm and load another cartridge The classic single barreled shotgun is a good example A firearm that can load multiple cartridges as the firearm is re cocked is considered a repeating firearm or simply a repeater A lever action rifle a pump action shotgun and most bolt action rifles are good examples of repeating firearms A firearm that automatically re cocks and reloads the next round with each trigger pull is considered a semi automatic or autoloading firearm The first rapid firing firearms were usually similar to the 19th century Gatling gun which would fire cartridges from a magazine as fast as and as long as the operator turned a crank Eventually the rapid firing mechanism was perfected and miniaturized to the extent that either the recoil of the firearm or the gas pressure from firing could be used to operate it thus the operator needed only to pull a trigger which made the firing mechanisms truly automatic An automatic or fully automatic firearm is one that automatically re cocks reloads and fires as long as the trigger is depressed An automatic firearm is capable of firing multiple rounds with one pull of the trigger The Gatling gun may have been the first automatic weapon though the modern trigger actuated machine gun was not widely introduced until the First World War with the German Spandau and British Lewis Gun Automatic rifles such as the Browning Automatic Rifle were in common use by the military during the early part of the 20th century and automatic rifles that fired handgun rounds known as submachine guns also appeared in this time Many modern military firearms have a selective fire option which is a mechanical switch that allows the firearm be fired either in the semi automatic or fully automatic mode In the current M16A2 and M16A4 variants of the U S made M16 continuous fully automatic fire is not possible having been replaced by an automatic burst of three cartridges this conserves ammunition and increases controllability Automatic weapons are largely restricted to military and paramilitary organizations though many automatic designs are infamous for their use by civilians Health hazards EditSee also Gunshot wound and Gun safety Firearm hazard is quite notable with a significant impact on the health system In 2001 for quantification purpose it was estimated that the cost of fatalities and injuries was US 4700 million per year in Canada US 170 per Canadian and US 100 000 million per year in the USA US 300 per American 42 Death Edit Gun related homicide and suicide rates in high income OECD countries 2010 ordered by total death rates homicide plus suicide plus other gun related deaths 43 From 1990 to 2015 global deaths from assault by firearm rose from 128 000 to 173 000 44 45 however this represents a drop in rate from 2 41 100 000 to 2 35 100 000 as world population has increased by more than two billion 46 Additionally there were 32 000 unintentional firearm global deaths in 2015 44 In 2017 there were 39 773 gun related deaths in the United States over 60 were suicides from firearms 47 Firearms are the second leading mechanism of injury deaths after motor vehicle accidents 48 49 In the 52 high and middle income countries with a combined population of 1 400 million and not engaged in civil conflict fatalities due to firearm injuries were estimated at 115 000 people per annum in the 1990s 42 Fatalities in 52 countries mid 1990s 42 In those 52 countries firearm is the first method used for homicide two thirds but only the second method for suicide 20 42 To prevent unintentional injury gun safety training includes education on proper firearm storage and firearm handling etiquette 50 51 Injury Edit Based on US data it is estimated that three people are injured for one killed 42 Noise Edit A common hazard of repeated firearm use is noise induced hearing loss NIHL NIHL can result from long term exposure to noise or from high intensity impact noises such as gunshots 52 53 Individuals who shoot guns often have a characteristic pattern of hearing loss referred to as shooters ear They often have a high frequency loss with better hearing in the low frequencies and one ear is typically worse than the other The ear on the side the shooter is holding the gun will receive protection from the sound wave from the shoulder while the other ear remains unprotected and more susceptible to the full impact of the sound wave 53 54 The intensity of a gunshot does vary lower caliber guns are typically on the softer side while higher caliber guns are often louder The intensity of a gunshot though typically ranges from 140 dB to 175 dB Indoor shooting also causes loud reverberations which can also be as damaging as the actual gunshot itself 53 54 According to the National Institute on Deafness and Other Communication Disorders noise above 85 dB can begin to cause hearing loss 52 While many sounds cause damage over time at the intensity level of a gunshot 140 dB or louder damage to the ear can occur instantly 52 54 Hearing protection is the only way to protect the ears against damage from gunfire as there is no option for the shooter to be further from the sound source or to reduce the intensity to a safe level If possible observers should attempt to move away but hearing protection is often still necessary 52 53 Different types of shooters may benefit from different types of hearing protection When target practicing it is recommended to wear an insert plug as well as an over the ear muff 53 Hunters are recommended to wear electronic type hearing protection which can amplify soft sounds like leaves crunching while reducing the intensity of the gunshot 53 54 Custom hearing protection can also be effective 53 54 and is typically recommended for individuals who are skeet shooting 53 Hearing protection does have limitations though and due to the high intensity of guns it is certainly possible for shooters to still develop hearing loss However hearing protection typically reduces the amount of damage the ear sustains even if it cannot completely protect the ear 53 Legal definitions EditFirearms include a variety of ranged weapons and there is no agreed upon definition For instance English language laws of big legal entities such as the United States India the European Union and Canada use different definitions Other English language definitions are provided by international treaties United States Edit In the United States under 26 USCA 861 unreliable source a the term firearm means 1 a shotgun having a barrel or barrels of less than 18 inches in length 2 a weapon made from a shotgun if such weapon as modified has an overall length of less than 26 inches or a barrel or barrels of less than 18 inches in length 3 a rifle having a barrel or barrels of less than 16 inches in length 4 a weapon made from a rifle if such weapon as modified has an overall length of less than 26 inches or a barrel or barrel of less than 16 inches in length 5 any other weapon as defined in subsection e 6 a machinegun 7 any silencer as defined in section 921 of title 18 United States Code The term firearm shall not include an antique firearm or any device other than a machinegun or destructive device which although designed as a weapon the Secretary finds by reason of the date of its manufacture value design and other characteristics is primarily a collector s item and is not likely to be used as a weapon According to the US Bureau of Alcohol Tobacco Firearms and Explosives if gas pressurization is achieved through mechanical gas compression rather than through chemical propellant combustion then the device is technically an air gun not a firearm 55 India Edit In India the arms act 1959 provides a definition of firearms where firearms means arms of any description designed or adapted to discharge a projectile or projectiles of any kind by the action of any explosive or other forms of energy and includes i artillery hand grenades riot pistols or weapons of any kind designed or adapted for the discharge of any noxious liquid gas or other such thing ii accessories for any such firearm designed or adapted to diminish the noise or flash caused by the firing thereof iii parts of and machinery for manufacturing fire arms and iv carriages platforms and appliances for mounting transporting and serving artillery European Union Edit In the European Union a European Directive amended by EU directive 2017 853 set minimum standards regarding civilian firearms acquisition and possession that EU Member States must implement into their national legal systems In this context since 2017 firearms are considered as any portable barrelled weapon that expels is designed to expel or may be converted to expel a shot bullet or projectile by the action of a combustible propellant 56 For legal reasons objects can be considered as a firearm if they have the appearance of a firearm or are made in a way which makes it possible to convert them to a firearm Member states may be allowed to exclude from their gun control law items such as antique weapons or specific purposes items which can only be used for that sole purpose Canada Edit In Canada firearms are defined by the Criminal Code firearm means a barrelled weapon from which any shot bullet or other projectile can be discharged and that is capable of causing serious bodily injury or death to a person and includes any frame or receiver of such a barrelled weapon and anything that can be adapted for use as a firearm arme a feu 57 Australia Edit Australia has a definition of firearms in its 1996 legal act firearm means any device whether or not assembled or in parts a which is designed or adapted or is capable of being modified to discharge shot or a bullet or other missile by the expansion of gases produced in the device by the ignition of strongly combustible materials or by compressed air or other gases whether stored in the device in pressurised containers or produced in the device by mechanical means and b whether or not operable or complete or temporarily or permanently inoperable or incomplete and which is not c an industrial tool powered by cartridges containing gunpowder or compressed air or other gases which is designed and intended for use for fixing fasteners or plugs or for similar purposes or d a captive bolt humane killer or e a spear gun designed for underwater use or f a device designed for the discharge of signal flares or h a device commonly known as a kiln gun or ringblaster designed specifically for knocking out or down solid material in kilns furnaces or cement silos or i a device commonly known as a line thrower designed for establishing lines between structures or natural features and powered by compressed air to other compressed gases and used for rescue purposes rescue training or rescue demonstration or j a device of a prescribed class 10 South Africa Edit In South Africa Firearms Control Act No 60 of 2000 defines firearm since June 2001 with a 2006 amendment of the definition firearm means any a device manufactured or designed to propel a bullet or projectile through a barrel or cylinder by means of burning propellant at a muzzle energy exceeding 8 joules 6 ft lbs b device manufactured or designed to discharge rim fire centre fire or pin fire ammunition c device which is not at the time capable of discharging any bullet or projectile but which can be readily altered to be a firearm within the meaning of paragraph a or b d device manufactured to discharge a bullet or any other projectile of a calibre of 5 6 mm 22 calibre or higher at a muzzle energy of more than 8 joules 6 ft lbs by means of compressed gas and not by means of burning propellant or Para d substituted by s 1 b of Act 43 of 2003 e barrel frame or receiver of a device referred to in paragraphs a b c or d but does not include a muzzle loading firearm or any device contemplated in section 5 9 International treaties Edit An inter American convention defines firearms as any barreled weapon which will or is designed to or may be readily converted to expel a bullet or projectile by the action of an explosive except antique firearms manufactured before the 20th Century or their replicas or any other weapon or destructive device such as any explosive incendiary or gas bomb grenade rocket rocket launcher missile missile system or mine 58 An international UN protocol on firearms considers that Firearm shall mean any portable barrelled weapon that expels is designed to expel or may be readily converted to expel a shot bullet or projectile by the action of an explosive excluding antique firearms or their replicas Antique firearms and their replicas shall be defined in accordance with domestic law In no case however shall antique firearms include firearms manufactured after 1899 59 See also EditFirearm science and technologyBallistics Internal ballistics Transitional ballistics External ballistics Terminal ballistics Electrothermal chemical technology Firearm action Glossary of firearms terms Gunsmith Physics of firearms Vertical forward grip Precision guided firearmFirearms and societyAir travel with firearms and ammunition Celebratory gunfire Firearms law and Gun politics Firearms ownership Gun control Small arms trade and Right to keep and bear arms Gun culture Gun safety Gun serial number Gun violence Index of gun politics articles Open carry and Concealed carry Overview of gun laws by nation Saturday night special Shooting range Shooting sportList of firearmsList of aircraft weapons List of battle rifles List of World War II infantry weapons List of firearm brands List of infantry weapons of World War I List of pistols List of secondary and special issue World War II infantry weapons List of shotguns List of sniper rifles List of submachine guns List of weapons of military aircraft of Germany during World War IIFirearms groups around the worldDominion of Canada Rifle Association National Rifle Association National Rifle Association of the United Kingdom PROGUN Philippines Shooters and Fishers Party Sporting Shooters Association of AustraliaReferences Edit a b Cole Suzanne N November 19 2016 Association of Firearm Instructors Glossary of Firearm Terms Association of Firearm Instructors Retrieved April 29 2017 a b Merriam Webster Dictionary Firearm Merriam webster com 2012 08 31 Retrieved 2014 04 19 a b Firearm American Heritage Dictionary of the English Language 4 ed Houghton Mifflin Company 2000 Firearm Collins English Dictionary Complete and Unabridged HarperCollins Publishers 2003 a b Helaine Selin 1997 Encyclopaedia of the History of Science Technology and Medicine in Non Western Cultures Springer p 389 ISBN 978 0 7923 4066 9 Retrieved 30 July 2013 Andrade 2016 p 52 Weller Jac Guilmartin John Ezell Edward November 7 2017 Small arm Britannica Encyclopaedia Britannica inc Retrieved February 23 2019 a b c Small Arms Survey reveals More than one billion firearms in the world Small Arms Survey 2018 Archived from the original on June 19 2018 Retrieved 15 January 2019 a b c Aaron Karp June 2018 Estimating Global Civilian Held Firearms Numbers PDF Report Small Arms Survey Archived from the original PDF on June 20 2018 a b https www saps gov za resource centre acts downloads juta act60of2000 pdf a b FIREARMS ACT 1996 SECT 3 Definitions U S C Title 18 CRIMES AND CRIMINAL PROCEDURE Firearms Guides Importation amp Verification of Firearms Gun Control Act Definition Pistol Bureau of Alcohol Tobacco Firearms and Explosives Definition of PUMP ACTION Ho Peng Yoke 1997 Gunpowder In Selin Helaine ed Encyclopaedia of the History of Science Technology and Medicine in Non Western Cultures Springer p 389 ISBN 978 0 7923 4066 9 Retrieved 30 July 2013 a b c d e Chase 2003 Needham 1986 293 94 Al Hassan Ahmad Y 2003 Gunpowder Composition for Rockets and Cannon in Arabic Military Treatises in the Thirteenth and Fourteenth Centuries ICON International Committee for the History of Technology 9 1 30 ISSN 1361 8113 JSTOR 23790667 Broughton George Burris David 2010 War and Medicine A Brief History of the Military s Contribution to Wound Care Through World War I Advances in Wound Care Volume 1 Mary Ann Liebert pp 3 7 doi 10 1089 9781934854013 3 inactive 31 October 2021 ISBN 9781934854013 The first hand cannon appeared during the 1260 Battle of Ain Jalut between the Egyptians and Mongols in the Middle East CS1 maint DOI inactive as of October 2021 link Books Amber Dickie Iain Jestice Phyllis Jorgensen Christer Rice Rob S Dougherty Martin J 2009 Fighting Techniques of Naval Warfare Strategy Weapons Commanders and Ships 1190 BC Present St Martin s Press p 63 ISBN 9780312554538 Known to the Arabs as midfa was the ancestor of all subsequent forms of cannon Materials evolved from bamboo to wood to iron quickly enough for the Egyptian Mamelukes to employ the weapon against the Mongols at the battle of Ain Jalut in 1260 which ended the Mongol advance into the Mediterranean world a b Crawfurd John 1856 A Descriptive Dictionary of the Indian Islands and Adjacent Countries Bradbury and Evans Mayers 1876 Chinese explorations of the Indian Ocean during the fifteenth century The China Review IV p 178 Manguin Pierre Yves 1976 L Artillerie legere nousantarienne A propos de six canons conserves dans des collections portugaises PDF Arts Asiatiques 32 233 268 doi 10 3406 arasi 1976 1103 Tiaoyuan Li 1969 South Vietnamese Notes Guangju Book Office Andaya L Y 1999 Interaction with the outside world and adaptation in Southeast Asian society 1500 1800 In The Cambridge history of southeast Asia ed Nicholas Tarling Cambridge Cambridge University Press p 345 401 The bewitched gun the introduction of the firearm in the Far East by the Portuguese by Rainer Daehnhardt 1994 Eaton Richard M 2013 Expanding Frontiers in South Asian and World History Essays in Honour of John F Richards Cambridge Cambridge University Press ISBN 9781107034280 Egerton W 1880 An Illustrated Handbook of Indian Arms W H Allen Tarling Nicholas 1992 The Cambridge History of Southeast Asia Volume 1 From Early Times to C 1800 Cambridge University Press ISBN 9780521355056 Coupland Robin The 1899 Hague Declaration concerning Expanding Bullets A treaty effective for more than 100 years faces complex contemporary issues PDF IRRC 85 137 The Inaccuracy of Muskets Journal of the American Revolution 2013 07 15 Retrieved 2018 04 09 Andrew Knighton The Development of Early Handguns warhistoryonline com Oct 19 2018 Roman Candle Gun Scotwars com Archived from the original on March 2 2009 gt Where Are You From Credo Reference Retrieved 2014 04 19 Weir William 50 Weapons That Changed Warfare Franklin Lakes NJ New Page 2005 71 74 Print Saidel Benjamin Matchlocks Flintlocks and Saltpetre The Chronological Implications for the Use of Matchlock Muskets among Ottoman Period Bedouin in the Southern Levant International Journal of Historical Archaeology 4 2000 191 215 DK 2014 04 01 Firearms An Illustrated History Penguin ISBN 978 1 4654 3089 2 History of firearms Archived 2015 12 22 at the Wayback Machine fireadvantages com How guns work Archived 2015 12 22 at the Wayback Machine fireadvantages com Flayderman Norm 2007 Flayderman s Guide to Antique American Firearms and Their Values 9 ed Iola Wisconsin F W Media Inc p 775 ISBN 978 0 89689 455 6 Barnes Frank C Bodinson Holt 2009 Amrerican Rimfire Cartridges Cartridges of the World A Complete and Illustrated Reference for Over 1500 Cartridges Iola Wisconsin Gun Digest Books p 441 ISBN 978 0 89689 936 0 Retrieved 25 January 2012 Shooting section la section de tir Archived 2013 11 10 at the Wayback Machine of the official website in French of a modern indoor shooting association in Belgium Les Arquebusier de Vise a b c d e http whqlibdoc who int hq 2001 WHO NMH VIP 01 1 pdf ua 1 Grinshteyn Erin Hemenway David March 2016 Violent Death Rates The US Compared with Other High income OECD Countries 2010 The American Journal of Medicine 129 3 266 273 doi 10 1016 j amjmed 2015 10 025 PMID 26551975 Table 4 PDF a b Wang Haidong Naghavi MohsenA October 2016 Global regional and national life expectancy all cause mortality and cause specific mortality for 249 causes of death 1980 2015 a systematic analysis for the Global Burden of Disease Study 2015 The Lancet 388 10053 1459 1544 doi 10 1016 S0140 6736 16 31012 1 PMC 5388903 PMID 27733281 GBD 2013 Mortality and Causes of Death Collaborators 17 December 2014 Global regional and national age sex specific all cause and cause specific mortality for 240 causes of death 1990 2013 a systematic analysis for the Global Burden of Disease Study 2013 Lancet 385 9963 117 71 doi 10 1016 S0140 6736 14 61682 2 PMC 4340604 PMID 25530442 World Population Prospects The 2015 Revision UN Population Division Archived from the original on December 22 2015 Retrieved January 10 2019 Linked to at Download Files where it states that the figures are for July 1 of the given year Firearms Injury Facts Retrieved 31 January 2019 Anderson RN Minino AM Fingerhut LA Warner M Heinen MA June 2 2004 Deaths injuries 2001 National Vital Statistics System 52 21 1 86 PMID 15222463 Minino AM Anderson RN Fingerhut LA Boudreault MA Warner M January 31 2006 Deaths injuries 2002 National Vital Statistics System 54 10 1 124 PMID 16485447 United States Government Accountability Office September 2017 Personal Firearms Programs that Promote Safe Storage and Research on Their Effectiveness PDF Cite journal requires journal help Aero Precision Gun Safety and Instruction Manual PDF Archived from the original PDF on 2018 04 01 Retrieved 2018 04 01 Cite journal requires journal help a b c d Noise Induced Hearing Loss NIDCD 2015 08 18 Retrieved 2019 10 15 a b c d e f g h i Gunshots and hearing loss why hearing protection is vital Healthy Hearing 2007 12 10 Retrieved 2019 10 15 a b c d e Recreational Firearm Noise Exposure American Speech Language Hearing Association Retrieved 2019 10 15 US Federal Govt does not consider an air gun to be a firearm and does not regulate airguns as firearms European Parliament and the Council 21 May 2008 DIRECTIVE 2008 51 EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 21 May 2008 amending Council Directive 91 477 EEC on control of the acquisition and possession of weapons recital Consolidated federal laws of canada Criminal Code 6 May 2021 Inter American Convention Against the Illicit Manufacturing of and Trafficking in Firearms Ammunition Explosives and Other Related Materials https treaties un org doc source RecentTexts 18 12 c E pdf Sources Edit Andrade Tonio 2016 The Gunpowder Age China Military Innovation and the Rise of the West in World History Princeton University Press ISBN 978 0 691 13597 7 Chase Kenneth 2003 Firearms A Global History to 1700 Cambridge University Press ISBN 978 0 521 82274 9 Cole Suzanne N 2017 Association of Firearm Instructors Glossary of Firearm Terms 2017 2018 Edition United States The Association of Firearm Instructors ISBN 978 0 9982150 3 7 Crosby Alfred W 2002 Throwing Fire Projectile Technology Through History Cambridge University Press ISBN 978 0 521 79158 8 Needham Joseph 1986 Science amp Civilisation in China 7 The Gunpowder Epic Cambridge University Press ISBN 978 0 521 30358 3 Wikimedia 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