M1A1 Thompson Submachine Gun with 30 Round Magazine
Operation Selective fire (fully and semi-automatic)
Caliber .45 (11.4 mm)
Muzzle velocity 280 mps (920 fps)
Ammunition .45 ACP, 230 gr bullet, 5 gr charge
Capacity Thompson (M1928A1): 50-round drum &
20- and 30-round detachable box magazine.
M1 and M1A1: 20-and 30-round detachable box magazine
Weight 4.9 kg (11 lbs)
Overall length 85.6 cm (33.7 in)
Rate of fire 600 to 725 rpm
Effective range 50m (55yds)