M1928A1, M1 & M1A1 THOMPSON SUB-MACHINE GUN

M1928A1, M1 & M1A1 THOMPSON SUB-MACHINE GUN
YearJanuary 1940 (M1928A1) April 1942 (M1) October 1942 (M1A1)
Weapon Type[@type]
Origin & Designer[@designer]
Numbers Produced562.511 (M
Crew[@crew]
Calibre.45 APC (11.43x23)
Elevation[@elevation]
Traverse[@gun_traverse]
Cartridge Weight[@cartridge_weight]
Round Weight230gr (15g)
Barrel Length260mm
Overall Length810mm
Grenade Types[@grenade_types]
Mount[@mount]
Combat Weight5.4 kg (M1928) 5.31 kg (M1 & M1A1)
OperationBlow Back Fully Automatic
Cooling System[@cooling]
SightsFront Blade and Fixed Rear Peep
Feed30 Round Box or 50 Round Drum Magazine (M1928A1 only)
Practical Rate of Fire210 r.p.m.
Maximum Rate of Fire700 r.p.m.
Blank Cartridge[@blank_cartridge]
Muzzle Velocity280 m/s
Fuel Capacity[@fuel_capacity]
Minimum Range[@minimum_range]
Effective Range50m
Maximum Range150m
Armour Penetration[@armour_penetration]
Bayonet[@bayonet]
Traction[@traction]
Variants[@variants]
NotesThe Thompson M1928 was first used by the US Navy and was the first version to see military action. When the US Army entered WW2 they adopted the M1928A1 version as their primary sub-machine gun. This was very expensive to produce so a simpler version (the M1) was developed, the main drawback was that this could not use the drum magazine issued to the M1928A1, but the M1 turned out to be more reliable in the field and as a result it was the most common version used in WW2. The M1A1 was a simplified version of the M1 and saw service in Korea.