Specifications for the
Vickers Machine Gun (Gun, Machine, Vickers, .303in, Mk 1)
Medium Machine Gun / Multirole Weapon
Country of Origin: United Kingdom
Manufacturer: Vickers Ltd / Vickers Armstrong, Ltd / Royal Ordnance Factory - UK
Initial Year of Service: 1912
Overall Length: 1100 mm (43.31 in)
Barrel Length: 720.00 mm (28.35 in)
Weight (Empty): 40.01 lb (18.15 kg)
Caliber: .303 British / 7.62x51mm NATO / .30-06 (various others)
Action: Recoil Operated; Automatic Fire Only
Feed: 250-round fabric (later metal link) belt
Muzzle Velocity: 2,440 ft/sec (744 m/sec)
Rate-of-Fire: 500 rounds per minute
Range: 6,560 ft (1,999 m; 2,187 yds)
Sights: Iron; Optional Collimating Sight
Mark 1 - Initial Infantry Support Model; water-cooled; adopted in 1912.
Mark 1* - Aircraft production form; air-cooled; appearing in 1916; 28lb weight.
Mark 2 - Aircraft production form; air-cooled; appearing in 1917; 22lb weight.
Mark 2* - Aircraft production form; air-cooled; appearing in 1927; feed allowed from left or right side of the receiver.
Mark 2*(a) - Mk 2* with left-side feed
Mark 2*(b) - Mk 2* with right-side feed
Mark 3 - Aircraft production form; appearinf in 1928; elongated flash hider.
Mark 4 - Vehicle Weapon; appearing in 1929; existed in prototype form only.
Mark 4B - Vehicle Weapon; redesigned barrel jacket.
Mark 5 - Aircraft production form; based on Mk 3; redesigned receiver access.
Mark 6 - Vehicle Weapon; water-cooled; appearing in 1934; based on the Mk 4B model.
Mark 6* - Vehicle Weapon with improved mount and barrel jacket.
Mark 7 - Vehicle Weapon; based on the Mk 6
US Machine Gun, Caliber .30in M1915 - US Army local-license production version by Colt; chambered for the .30-06 cartridge.
Ametrallador Modello 1915 - Mexican Army designation of American M1915.
Vickers .50 - Heavy Machine Gun derivative appearing in Mk 1, Mk 2, Mk 3, Mk 4 and Mk 5 forms.
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