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Japanese 7.7mm Type 89 Model 2 Machine Gun


Photograph of Type 89 Model 2 machine gun

U.S. Navy. Via Francillon (1979)

Specifications:

Ammunition type
7.7 x 58 SR with AP, ball, HE, incendiary, or tracer rounds
Projectile Weight     
0.4 ounce or 11.3 grams (AP)
0.35 ounce or 9.8 grams (incendiary)
Velocity 2660 feet per second
811 meters per secod
Range 1970 feet
600 meters
Rate of fire     
900 rounds per minute
Weight
28 lbs
12.7 kg
Gun power
16


The Type 89 Model 2 machine gun was used as a fixed weapon on Japanese fighters throughout the war. The original Type 89, manufactured from 1930 to 1940, was a license-built copy of the Vickers E gun rechambered for the improved 7.7 x 58 SR Type 89 cartridge. During 1938-1940 the Japanese heavily revised the design as the Type 89 kai or Model 2, which was manufactured from 1940 on.

The gun had a short recoil toggle locked action and was fed from a disintegrating metal link belt. It synchronized well but was also used as a wing gun and, as the Te-1, as a remote-controlled tail gun in the Ki-21 Sally.

References

Francillon (1979)

Mikesh (2004)

Williams and Gustin (2003)


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