The Vickers machine gun or Vickers gun is a name primarily used to refer to the water-cooled .303 British (7.7 mm) machine gun produced by Vickers Limited, originally for the British Army. The machine gun typically required a six- to eight-man team to operate: one fired, one fed the ammunition, the rest helped to carry the weapon, its ammunition, and spare parts. Not to be confused with the Maxim machine gun, it was in service from before the First World War until the 1960s, with air-cooled versions of it on many Allied World War I fighter aircraft. The weapon had a reputation for great solidity and reliability. Ian V. Hogg, in Weapons & War Machines, describes an action that took place in August 1916, during which the British 100th Company of the Machine Gun Corps fired their ten Vickers guns to deliver sustained fire for twelve hours. Using 100 barrels, they fired a million rounds without breakdowns. "It was this absolute foolproof reliability which endeared the Vickers to every British soldier who ever fired one. It never broke down; it just kept on firing and came back for more."
Vickers Medium Machine Gun Type Medium machine gun Place of origin United Kingdom Service history In service 1912–1968 Used by See Users Wars World War I
Irish Civil War
Spanish Civil War
World War II
Greek Civil War
First Indochina War
Bangladesh Liberation War
Indo-Pakistan War of 1947
1948 Arab–Israeli War
Cypriot intercommunal violence
1971 JVP insurrection
Aden Emergency
South African Border War
Syrian Civil War
Production history Designed 1912 Manufacturer Vickers Specifications Mass 33–51 lb (15–23 kg) all-up Length 3 ft 8 in (1.12 m) Barrel length 28 in (720 mm) Crew Three man crew Cartridge .303 British
Action Recoil with gas boost Rate of fire 450 to 500 round/min Muzzle velocity 2,440 ft/s (744 m/s) (.303 Mk. VII ball)
2,525 ft/s (770 m/s) (.303 Mk. VIIIz ball)
Effective firing range 2,187 yd (2,000 m) Maximum firing range 4,500 yd (4,115 m) indirect fire (.303 Mk. VIIIz ball) Feed system 250-round canvas belt
The Vickers machine gun or Vickers gun is a name primarily used to refer to the water-cooled .303 British (7.7 mm) machine gun produced by Vickers Limited, originally for the British Army. The machine gun typically required a six- to eight-man team to operate: one fired, one fed the ammunition, the rest helped to carry the weapon, its ammunition, and spare parts. Not to be confused with the Maxim machine gun, it was in service from before the First World War until the 1960s, with air-cooled versions of it on many Allied World War I fighter aircraft.
The weapon had a reputation for great solidity and reliability. Ian V. Hogg, in Weapons & War Machines, describes an action that took place in August 1916, during which the British 100th Company of the Machine Gun Corps fired their ten Vickers guns to deliver sustained fire for twelve hours. Using 100 barrels, they fired a million rounds without breakdowns. "It was this absolute foolproof reliability which endeared the Vickers to every British soldier who ever fired one. It never broke down; it just kept on firing and came back for more."
The Vickers machine gun was based on the successful Maxim gun of the late 19th century. After purchasing the Maxim company outright in 1896, Vickers took the design of the Maxim gun and improved it, inverting the mechanism as well as reducing its weight by lightening and simplifying the action and using high strength alloys for certain components. A muzzle booster was also added.
The British Army formally adopted the Vickers gun as its standard machine gun under the name Gun, Machine, Mark I, Vickers, .303-inch on 26 November 1912. There were still great shortages when the First World War began, and the British Expeditionary Force was still equipped with Maxims when sent to France in 1914. Vickers was, in fact, threatened with prosecution for war profiteering, due to the exorbitant price it was demanding for each gun. As a result, the price was slashed. As the war progressed, and numbers increased, it became the British Army's primary machine gun, and served on all fronts during the conflict. When the Lewis Gun was adopted as a light machine gun and issued to infantry units, the Vickers guns were redefined as heavy machine guns, withdrawn from infantry units, and grouped in the hands of the new Machine Gun Corps (when heavier 0.5 in/12.7 mm calibre machine guns appeared, the tripod-mounted, rifle-calibre machine guns like the Vickers were re-classified as "medium machine guns"). After the First World War, the Machine Gun Corps (MGC) was disbanded and the Vickers returned to infantry units. Before the Second World War, there were plans to replace the Vickers gun as part of a widescale change from rimmed to rimless rounds; one of the contenders was the 7.92mm Besa machine gun (British-built Czech ZB-53 design), which eventually became the British Army's standard tank-mounted machine gun. However, the Vickers remained in service with the British Army until 30 March 1968. Its last operational use was in the Radfan during the Aden Emergency. Its successor in UK service is the British L7 variant of the FN MAG general purpose machine gun.
Use in aircraft
In 1913, a Vickers machine gun was mounted on the experimental Vickers E.F.B.1 biplane, which was probably the world's first purpose-built combat aeroplane. However, by the time the production version, the Vickers F.B.5, had entered service the following year, the armament had been changed to a Lewis gun.
During World War I, the Vickers gun became a standard weapon on British and French military aircraft, especially after 1916. Although heavier than the Lewis, its closed bolt firing cycle made it much easier to synchronize to allow it to fire through aircraft propellers. The belt feed was enclosed right up to the gun's feed-way to inhibit effects from wind. Steel disintegrating-link ammunition belts were perfected in the UK by William de Courcy Prideaux in mid-war and became standard for aircraft guns thereafter. By 1917 it had been determined that standard rifle calibre cartridges were less satisfactory for shooting down observation balloons than larger calibres carrying incendiary or tracer bullets; the Vickers machine gun was chambered in the 11mm Vickers round, known as the Vickers aircraft machine gun and sometimes the "Balloon Buster", and was adopted by the Allies as a standard anti-balloon armament, used by both the British and French in this role until the end of the war.
The famous Sopwith Camel and the SPAD XIII types used twin synchronized Vickers, as did most British and French fighters between 1918 and the mid-1930s. In the air, the weighty water cooling system was rendered redundant by the chilly temperatures at high altitude and the constant stream of air passing over the gun as the plane flew; but because the weapon relied on barrel recoil, the (empty) water-holding barrel jacket or casing needed to be retained. Several sets of louvred slots were cut into the barrel jacket to aid air cooling, a better solution than what had initially been attempted with the 1915-vintage lMG 08 German aircraft ordnance.
As the machine gun armament of fighter aircraft moved from the fuselage to the wings in the years before the Second World War, the Vickers was generally replaced by the faster-firing and more reliable Browning Model 1919 using metal-linked cartridges. The Gloster Gladiator was the last RAF fighter to be armed with the Vickers, although they were later replaced by Brownings. The Fairey Swordfish continued to be fitted with the weapon until production ended in August 1944.
Several British bombers and attack aircraft of the Second World War mounted the Vickers K machine gun or VGO, a completely different design, resembling the Lewis gun in external appearance.
Vickers machine guns, designated as models E (pilot's) and F (observer's) were also used among others in Poland, where 777 of them were converted to 7.92×57mm Mauser cartridge in 1933-1937.
The larger calibre (half-inch) version of the Vickers was used on armoured fighting vehicles and naval vessels.
The Gun, Machine, Vickers, .5-inch, Mk. II was used in tanks, the earlier Mark I having been the development model. This entered service in 1933 and was obsolete in 1944. Firing either single shot or automatic it had a pistol type trigger grip rather than the spades of the 0.303 in (7.7 mm) weapon.
The Gun, Machine, Vickers, .5-inch, Mk. III was used as an anti-aircraft gun on British ships. This variation was typically four guns mounted on a 360° rotating and (+80° to −10°) elevating housing. The belts were rolled into a spiral and placed in hoppers beside each gun. The heavy plain bullet weighed 1.3 oz (37 g) and was good for 1,500 yd (1,400 m) range. Maximum rate of fire for the Mark III was about 700 rpm from a 200-round belt carried in a drum. They were fitted from the 1920s onwards, but in practical terms, proved of little use. During the Second World War, the naval 0.5 in (12.7 mm) version was also mounted on power-operated turrets in smaller watercraft, such as Motor Gun Boats and Motor Torpedo Boats.
The Mark IV and V guns were improvements on the Mark II. Intended for British light tanks, some were used during the war on mounts on trucks by the Long Range Desert Group in the North Africa Campaign.
The Vickers machine gun was produced, between the wars, as the vz.09 machine gun.
The Vickers was widely sold commercially and saw service with many nations and their own particular ammunition. It was also modified for each country and served as a base for many other weapons. For example:
- 6.5×52mm Mannlicher–Carcano
- 6.5×50mmSR Arisaka
- 7×57mm Mauser
- .280 British
- 7.5×55mm Swiss
- 7.62×51mm NATO
- .30-06 Springfield
- 7.65×53mm Argentine
- 8mm Lebel
Service after World War II
The Union of South Africa retained a large inventory of surplus Vickers machine guns after World War II. Many of these were donated to the National Liberation Front of Angola (FNLA) and National Union for the Total Independence of Angola (UNITA) during the Angolan Civil War. Angolan militants were usually trained in their use by South African advisers. Small quantities re-chambered for 7.62mm NATO ammunition remained in active service with the South African Defence Force until the mid 1980s, when they were all relegated to reserve storage. Six were withdrawn from storage and reused by a South African liaison team operating with UNITA during the Battle of Cuito Cuanavale, after which the weapons were finally retired.
By the early 1900s, the U.S. military had a mixed collection of automatic machine guns in use that included M1895 "potato diggers", 287 M1904 Maxims, 670 M1909 Benét–Mercié guns, and 353 Lewis machine guns. In 1913, the U.S. began to search for a superior automatic weapon. One of the weapons considered was the British Vickers machine gun.
The Board of Ordnance & Fortifications held a meeting on March 15, 1913 to consider the adoption of a new type of machine gun...The Board is of the opinion that, with the exception of the Vickers gun, none of the other guns submitted showed sufficiently marked superiority for the military service, in comparison with the service Automatic Machine Rifle to warrant further consideration of them in the field test. The Board is of the unanimous opinion that the Vickers rifle caliber gun, light model, stood the most satisfactory test. As to the merits of the Vickers gun there is no question – it stood in a class by itself. Not a single part was broken nor replaced. Nor was there a jam worthy of the name during the entire series of tests. A better performance could not be desired.
Captain John S. Butler, Office of the Chief of Ordnance
Field tests were conducted of the Vickers in 1914, and the gun was unanimously approved by the board for the army under the designation "Vickers Machine Gun Model of 1915, Caliber .30, Water-Cooled". One hundred twenty-five guns were ordered from Colt's Manufacturing Company in 1915, with an additional 4,000 ordered the next year, all chambered for .30-06. Design complexities, design modifications, and focus on producing previously ordered weapons meant that when the U.S. entered World War I in April 1917, Colt had not manufactured a single M1915.
Production began in late 1917 with shipments to the Western Front in mid-1918. The first twelve divisions to reach France were given French Hotchkiss M1914 machine guns, and the next ten had M1915s. The next twelve divisions were to have Browning M1917 machine guns, but there was a shortage of parts. By August 1918, thirteen U.S. divisions were armed with the Colt–Vickers machine gun. 7,653 guns were issued during the war out of 12,125 produced in total. War damage losses reduced the number of M1915s in the U.S. inventory to about 8,000 total.
After World War I, the Colt–Vickers machine guns were kept in reserve until World War II. Several hundred were sent to the Dutch East Indies and the Philippines, and were all eventually lost to enemy action. In 1940 and 1941, a total of 7,071 M1915 guns were purchased by the United Kingdom to re-equip their forces after the Dunkirk evacuation, which depleted the weapon from the U.S. inventory before their entry into the war. Because the M1915 Colt–Vickers was not chambered for the standard British .303, it was painted with a red band to differentiate it and restricted it to Home Guard use.
The weight of the gun itself varied based on the gear attached, but was generally 25 to 30 pounds (11 to 14 kg) with a 40-to-50-pound (18 to 23 kg) tripod. The ammunition boxes for the 250-round ammunition belts weighed 22 pounds (10.0 kg) each. In addition, it required about 7.5 imperial pints (4.3 l) of water in its evaporative cooling system to prevent overheating. The heat of the barrel boiled the water in the jacket surrounding it. The resulting steam was taken off by a flexible tube to a condenser container—this had the dual benefits of avoiding giving away the gun's location, and also enabling re-use of the water, which was very important in arid environments.
In British service, the Vickers gun fired the standard .303 inch cartridges used in the Lee–Enfield rifle, which generally had to be hand-loaded into the cloth ammunition belts. There was also a 0.5 in calibre version used as an anti-aircraft weapon and various other calibres produced for foreign buyers.
The gun was 3 feet 8 inches (112 cm) long and its cyclic rate of fire was between 450 and 600 rounds per minute. In practice, it was expected that 10,000 rounds would be fired per hour, and that the barrel would be changed every hour—a two-minute job for a trained team. The Vickers gun could sustain fire for long durations of time exceeding the recommended 10,000 rounds an hour due to the water-cooled barrel and hourly barrel swaps. One account states that a Vickers fired just under 5 million rounds in a week as a test in 1963 at Strensall Barracks and was still operable. The muzzle velocity was 2,440 ft/s (744 m/s) ±40 ft/s (12 m/s) with Mark VII(z) ammunition and 2,525 ft/s (770 m/s) with Mark VIIIz ammunition. The Mark VIIIz cartridge, which had a boat-tailed spitzer 'streamlined' bullet, could be used against targets at a range of approximately 4,500 yd (4,115 m). The bullet jackets were generally made of an alloy of cupro-nickel, and gilding metal. Ammunition for the Vickers used colour-coded annuli. Tracer ammunition was marked with a red annulus; armouring-piercing ammunition with a green annulus, and incendiary ammunition with a blue annulus. Explosive ammunition was marked with an orange annulus before the Second World War and was changed to black.
The gun and its tripod were carried separately and both were heavy. The Vickers Mk I was 30 lb (13.6 kg) without the water and tripod, and weighed 40 lb (18.1 kg) with the water. The original design did not anticipate it being carried up jungle-covered mountains on men's backs, but such was the weapon's popularity that men were generally content to pack it to all manner of difficult locations. The tripod would be set up to make a firm base, often dug into the ground a little and perhaps with the feet weighted down with sandbags.
The water jacket would be filled with about 4 litres (1.1 US gal) of water from a small hole at the rear end, sealed by a cap. The evaporative cooling system, though heavy, was very effective and enabled the gun to keep firing far longer than its air-cooled rival weapons. If water was unavailable, soldiers were known to resort to using their urine. It was sometimes claimed that crews would fire off a few rounds simply to heat their gun's cooling water to make tea, despite the resulting brew tasting of machine-oil. In extremely cold weather, the cooling water could freeze and damage the gun. This problem was addressed using an insulating water jacket cover, introduced in 1918 but still in use during the Korean War. Some crews added vehicle antifreeze, others drained the water jacket, or simply fired a few rounds periodically to keep the water from freezing.
The loader sat to the gunner's right, and fed in belts of cloth, into which the rounds had been placed. The weapon would draw in the belt from right to left, pull the next round out of the belt and into the chamber, fire it, then send the fired brass cartridge down and out of the receiver while the cloth belt would continue out the left side. During sustained fire, the barrel would heat up which heated the water in the jacket until hot enough for the water to evaporate or boil thereby cooling the barrel releasing the heat through steam. It took the Mk I 600 rounds of continuous fire to boil the water in the jacket, evaporating at a rate of 1.5 pints (0.852 L) per 1,000 rounds. The steam would reach the top of the jacket and enter a steam tube which led to a port that was situated under the jacket near the muzzle. A hose was connected to this, which released the steam into a metal water can allowing it to be vented away from the rest of the gun hiding the steam cloud and the gun's position. This also allowed any condensate to be reclaimed from the steam. Before the can got too full, it would be emptied back into the jacket to replenish the water level which would have fallen as the water evaporated and boiled away. If the water jacket needed to be emptied, a plug under the jacket could be unscrewed to drain the entire jacket.
The Vickers was used for indirect fire against enemy positions at ranges up to 4,500 yards (4,115 m) with Mark VIIIz ammunition. This plunging fire was used to great effect against road junctions, trench systems, forming up points, and other locations that might be observed by a forward observer, or zeroed in at one time for future attacks, or guessed at by men using maps and experience. Sometimes a location might be zeroed in during the day, and then attacked at night, much to the surprise and confusion of the enemy. New Zealand units were especially fond of this use. A white disc would be set up on a pole near the MMG, and the gunner would aim at a mark on it, knowing that this corresponded to aiming at the distant target. There was a special back-sight with a tall extension on it for this purpose. The only similar weapon of the time to use indirect fire was the German MG 08, which had a separate attachment sight with range calculator.
A British World War II Vickers medium machine gun platoon typically had one officer in command of four guns, in two sections of two, each with a crew and a small team of riflemen whose job was to protect the gun and keep it supplied with ammunition.
The Vickers is a fully automatic belt-fed firearm which is fired from a closed-bolt. When ready to fire, a round is in the chamber and the breechblock assembly and working parts are forward. It has a recoil operated, floating action with a toggle lock similar to a Luger pistol. However, unlike the Luger, the mechanism is totally contained within the receiver or body of the Vickers. When operated, the floating action, which consists of the barrel, breechblock assembly and toggle mechanism, reciprocate as a unit within the body of the gun. The mechanism is held together by recoiling plates, that connect the breech end of the barrel to the rear of the toggle mechanism. The breech is locked closed when the toggle is straight. The crank cocking handle is part of the floating action. It acts through the rear pivot of the toggle lock. Pulling the cocking handle causes the toggle to rise. This unlocks the breech and then draws the breechblock assembly rearward. While firing, the opposite end of the crank handle cams on a round lug fixed to the body. Rearward movement of the floating action tips the cocking handle and unlocks the toggle. The recoil that unlocks the toggle is gas assisted. Propellent gases leaving the muzzle are partly contained within the muzzle cap and act on the muzzle cup (attached to the barrel) to assist in propelling the floating action rearward to the point where the toggle mechanism is unlocked. The breechblock assembly then opens fully while opposed by a spring which ultimately returns it to the closed position. The spring under tension acts on a crank mounted on the opposite side of the body to the cocking handle.
The feed block assembly sits directly above the breech. It accepts the canvas belt loaded with ammunition. With each firing cycle, it advances the belt by one round so that a fresh cartridge is presented ready for loading. The belt is advanced by pawls which move from side to side. The pawls are operated by a linkage that engages with the floating action. A second set of spring-loaded pawls tilt up and down as the belt passes over them. These hold the belt during the return cycle of the feed pawls.
The breechblock assembly is roughly as high as the receiver of the gun. On its front face is the extractor block. Levers cause this to move up and down as the action is cycled. It has a slot with two grooves which allow the rim of the cartridge to be held from each side, much like a stripper clip does. With the breechblock assembly closed and ready to fire, the extractor block grips the base of two cartridges: the lower cartridge in the chamber ready to fire and an upper cartridge held in the canvas belt within the feed block. When the breechblock assembly unlocks after firing, the extractor pulls the spent cartridge from the chamber and, once clear, this falls through an ejection port in the underside of the gun's body. Unlocking the breechblock assembly also withdraws the upper round (the next round to be chambered) from the belt. When there is sufficient clearance, the extractor block lowers the new round until it is aligned with the chamber. Forward movement of the breechblock assembly then chambers the round. Near the very end of the forward cycle, the extractor block rises to engage the next round ready to be loaded.
The breechblock assembly houses the firing pin and trigger mechanism. The firing pin, under spring tension, strikes the primer of the cartridge through a hole in the extractor block. It must therefore be retracted before the extractor block moves down as part of the loading cycle. Once retracted, the firing pin is held in a cocked position by a sear, ready for the next firing cycle. As the breechblock assembly fully closes on the breech, the sear disengages but the firing pin is held rearward by the trigger. The end of the trigger protrudes from the top of the breechblock assembly.
To fire the loaded gun, the gunner depresses a paddle at the rear of the gun. Through a lever, this pulls on a sliding bar that trips the trigger to release the firing pin. The weapon then cycles to load the next cartridge for firing. If the paddle is still depressed when the breech closes, the trigger is tripped again and a further firing cycle occurs.
- Bolivia Used during the Chaco War
- British Empire
- Ceylon Used by Ceylonese army in the 1971 JVP insurrection.
- Cyprus: possibly used during the Cypriot intercommunal violence and supplied from Greece or Turkey
- France: 2,000 ordered in 1914
- Finland: Vickers from various sources were acquired from 1920 and 100 were also delivered by United Kingdom during Winter war.
- German Empire: in 1918, Schutztruppe used 17 Vickers guns captured during the South West Africa campaign.
- Italy chambered in 6.5×52mm Carcano for infantry and .303 British for aircraft.
- Jordan: Arab Legion
- Latvia: used by pre-1940 Latvian Army and by Nazi-allied Latvian Police Battalions
- British Malaya
- Netherlands: M23 machine gun, in 6.5×53mmR Used some Australian or British-made .303 Vickers during the Indonesian National Revolution
- New Zealand
- PakistanUsed by Pakistan army in the Indo-Pakistani War of 1947–1948.
- Paraguay: captured from Bolivia
- Philippines
- Poland aircraft version, later rechambered in 7.92×57 mm
- Portugal produced locally as m/917
- Russian Empire: Vickers manufactured by Colt in 7.62×54mmR
- Sierra Leone
- South Africa
- Spanish Republic
- United Kingdom
- United States: 12,125 Vickers were issued to the US Army in France
- Vietnam: Used by Viet Minh
- South Yemen
Rear view of Vickers gun team in action at the Battle of the Somme.
Vickers gun set up for anti-aircraft purposes during the First World War.
Vickers machine-gun of the 1st Manchester Regiment in Malaya, 1941.
View of the breech of a Vickers gun showing brass feed ramp.
Dorsal view of a Vickers gun showing fluted water-cooling tank.
Vickers machine gun from Polish Army Museum's collection.
Weapons of comparable role, performance and era
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