Type 1 heavy machine gun

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Type 1
TypeHeavy machine gun
Place of originJapan
Service history
In service1941-1945
Used byJapan
WarsWorld War II, Chinese Civil War, First Indochina War, Vietnam War
Production history
Produced1941 - 1945
Mass36.8 kg (81 lb 2 oz) (gun & tripod)
Length1,077 mm (3 ft 6 in)
Barrel length589 mm (1 ft 11.2 in)

Cartridge7.7x58mm Arisaka
ActionGas operated
Rate of fire400-450 round/min
Muzzle velocity770 m/s (2,500 ft/s)
Effective firing range1.4 km (0.87 mi)
Maximum firing range4.1 km (2.5 mi)
Feed systemMetal 30-round feed trays
SightsBlade front sight with rear peep sight, graduated from 100 to 2,200 meters, with provision for mounting a telescope.

The Type 1 Heavy Machine Gun (一式重機関銃, Iti-shiki juu-kikanjuu) was a heavy machine gun used by the Imperial Japanese Army during the Second World War starting from 1941.


It was sometimes used as a light anti-aircraft gun during the war in the Pacific. It is essentially a smaller, lighter version of the 7.7x58mm Type 92 Heavy Machine Gun. It employs the same principles of operation, simply with scaled down components. The barrel is designed to be rapidly changed in the field, as a result the barrel cooling rings have been reduced in size. It was fed from 30-round brass feed strips.

See also[edit]


  • TM-E 30-480, Handbook on Japanese Military Forces. United States War Department. 1944.

External links[edit]