Ho-103 machine gun

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Ho-103 machine gun
12.7mmHo-103.jpg
12.7 mm Ho-103 machine gun on display at the Steven F. Udvar-Hazy Center
Type Machine Gun
Place of origin  Japan
Service history
Used by  Japan
Wars World War II
Specifications
Weight 23 kilograms (50.7 lb)

Cartridge 12.7 mm x 81SR Breda
Action Recoil operation
Rate of fire 900 RPM
400 RPM (synchronized)
Muzzle velocity 780 m/s (2,600 ft/s)
Feed system Belt
Sights Iron

The 12.7mm Type 1 (1941) was a Japanese aircraft machine gun widely used during World War II and also known as the Ho-104. The Ho-103 was actually a fixed gun and the Ho-104 a flexible gun. It was based on the American .50-caliber M1921 aircraft Browning machine gun but achieved a higher rate of fire by using a smaller, lower velocity Breda (Vickers) cartridge, intermediate in length between the WW II German 13 mm calibre MG 131's 64mm length cartridge, and the long 99mm cartridge of the veteran American M2 Browning .50 calibre gun. Because of this, the gun was frequently loaded with explosive or incendiary ammunition in an attempt to increase terminal effects on aircraft.

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