Thompson Submachine Gun, Caliber .45

Thompson Submachine Gun, Caliber .45
M1928A1 wartime production variant.
Type	Submachine gun
Place of origin	United States
Service history
In service	1938–1971 (officially, U.S. military)
Used by	See Users
Wars	Banana Wars p. 187–188</ref> Irish Civil War World War II Chinese Civil War Greek Civil War Korean War Vietnam War The Troubles Bosnian War
Production history
Designer	John T. Thompson
Designed	1917–1920
Manufacturer	Auto-Ordnance Company (originally) The Birmingham Small Arms Company Limited Colt Savage Arms RPB Industries
Produced	1921–present
Number built	1,700,000 approx.
Variants	See Variants section
Specifications
Weight	10.8 lb (4.9 kg) empty (M1928A1) 10.6 lb (4.8 kg) empty (M1A1)
Length	33.5 in (850 mm) (M1928A1) 32 in (810 mm) (M1/M1A1)
Barrel length	10.5 in (270 mm) 12 in (300 mm) (with cutts compensator)
Cartridge	.45 ACP (11.43 × 23 mm)
Action	Blowback, Blish Lock
Rate of fire	600–1500+ rpm, depending upon model
Muzzle velocity	285 m/s (935 ft/s)
Effective range	50 metres (160 ft)
Feed system	20-round stick/box magazine 30-round stick/box magazine 50-round drum magazine 100-round drum magazine (M1 and M1A1 models do not accept drum magazines)