The Pacific War Online Encyclopedia
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U.S. Navy. Via Francillon (1979)
||7.92 x 57 with AP, API, and HEI rounds
||0.41 ounce (AP)
11.5 g (AP)
|Velocity||2460 feet per second
750 meters per secod
||1100 rounds per minute|
The Type 98 machine gun was used as a flexible weapon on Japanese aircraft throughout the war. It was based on the German MG 15, which in turn was based on the Rheinmetall MG 30 light machine gun. It had a short recoil mechanism and was fed from saddle drum magazines containing 75 rounds. It was one of the few aerial gun designs used by both the Army and Navy (the Navy version being the Type 1.)
The Japanese originally intended to manufacture the fixed version of the MG 15, the MG 17, as well. However, they were unable to produce springs for the gun that could reliably maintain a long burst, a fault that was tolerable in a flexible weapon but not in a fixed weapon.
The large object below the action in the photograph is an empty case catcher, a common feature of Japanese aerial machine guns.
Williams and Gustin (2003)
The Pacific War
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