CODE – 02-132-938

NAME – M1928A1 Thompson

NAME (NATIVE) – Thompson Submachine Gun. Cal 45 M1928A1

COUNTRY OF ORIGIN – USA

DATE OF MANUFACTURE – 1938

CALIBER – 11.43x23mm (.45 ACP)

OVERALL LENGTH WITHOUT STOCK – 59.7 cm (23.5 in) with Cutts Compensator

OVERALL LENGTH WITH STOCK – 83.8 cm (33 in) with Cutts Compensator

STOCK LENGTH – 33.1 cm (13.05 in) Removing stock takes 21.6 cm (8.5 in) off of overall length

BARREL LENGTH – 37.6 cm (12.44 in) with Cutts compensator

RIFLING (TYPE & TWIST) – 6 Groove, Right hand twist, one turn in 41 cm (16 in)

BULLET DIAMETER – 11.46 mm (0.451 in)

BULLET WEIGHT – 15 g (230 grain)

MUZZLE VELOCITY – 290 m/s (950 fps)

MUZZLE ENERGY – 625 j (451 ft/lbs)

WEIGHT (EMPTY) WITHOUT STOCK – 3.79 kg (8 lb 5.7 oz) with Horizontal foregrip, Cutts Compensator

WEIGHT (EMPTY) WITH STOCK – 4.59 kg (10 lb 15 oz) with Horizontal foregrip, Cutt Compensator

WEIGHT (LOADED) WITHOUT STOCK – 4.40 kg (9 lb 11.2 oz) loaded with 20-rd Type XX Magazine, Horizontal forgrip, Cutts Compensator

WEIGHT (LOADED) WITH STOCK – 5.2 kg (11 lb 7.4 oz) loaded with 20-rd Type XX Magazine, Horizontal foregrip, Cutts Compensator

STOCK WEIGHT – 0.80 kg (1 lb 12.2 oz)

SIGHTS –Fixed, Iron, Adjustable , Front, blade, rear Lyman folding ladder type sight with peep, Graduated from 0 to 549 m (650 yds) in 23 m (25 yd) increments, Battle sight square notch (ladder sight folded),  set to 46 m (50 yds),

Later production weapons had Fixed, Iron, Nonadjustable sights, Front sight – Blade, Rear sight simple “L” shaped peep sight, Aperture set at 91 m (100 yards), Square notch on top of rear sight set at 229 m (250 yards)

EFFECTIVE RANGE – 182.9 m (200 yds)

OPERATION – Delayed blowback with Blish principle, fires from open bolt

TYPE OF FIRE – Selective, Semi and Full automatic

RATE OF FIRE – 50 rpm (Semi), 70 rpm (Full using 20 rd magazines), 100 rpm (Full using 50 rd drums)

CYCLIC ROF – 600 – 700 rpm

FEED DEVICE – 20 (Type XX) or 30 (Type XXX) round box magazine, Double column, double feed, 50 (Type C) round drum magazine

FEED DEVICE WEIGHT (EMPTY) – 20 rd 0.18 kg (6.4 oz), 30 rd 0.23 kg (8 oz), 50 rd drum 1.13 kg (2 lbs 7.8 oz)

FEED DEVICE WEIGHT (LOADED) – 20 rd 0.61 kg (1 lb 5.4 oz), 30 rd 0.86 kg (1 lb 14.3 oz), 50 rd drum 2.21 kg (4 lbs 14 oz)

BASIC LOAD – Five Type XX 20-rd magazines, 2 Type L 50-rd drums (200 rounds)

LOAD WT – 7.52 kg (16 lb 9.3 oz)

MANUFACTURER – Savage Arms Company, Utica, NY, Auto-Ordnance Corporation, Bridgeport, Connecticut

STATUS – Obsolete

SERVICE – US Military and Foreign Allies, Foreign commercial sales, law enforcement