| Type 4 20mm twin AA machine cannon | |
|---|---|
 | |
| Type | Autocannon |
| Place of origin | Empire of Japan |
| Service history | |
| In service | 1944–1945 |
| Used by | Japan |
| Wars | World War II |
| Production history | |
| No. built | approximately 500 (an alternate source states 616 units produced) |
| Specifications | |
| Barrel length | 1.4 m (4 ft 7 in) L/70 |
| Shell | 20×142 mm |
| Caliber | 20 mm (0.79 in) |
| Action | Gas operated |
| Rate of fire | 600 rounds/min (maximum) |
| Muzzle velocity | 950 m/s |
| Maximum firing range | 5,500 m (18,000 ft) (horizontal) 3,500 m (11,500 ft) (altitude) |
| Feed system | 2x 20 round box |
Type 4 20 mm twin AA machine cannon was an Imperial Japanese Army (IJA) anti-aircraft gun. It consisted of two Type 98 20 mm AA machine cannon. It was introduced in 1944 and approximately 500 to 616 guns were produced. It was mainly designed for use against ground targets, but was only used in an anti-aircraft role.
The Type 98 20 mm AA machine cannon was the most common light anti-aircraft gun of the Japanese military and the IJA used it until the end of World War II.
References
Notes
- ^ Taki's Imperial Japanese Army: Type 4 20 mm twin AA Machine Cannon
- ^ Ness 2014, p. 170.
- ^ Taki's Imperial Japanese Army: Type 98 20mm AA Machine Cannon
- Ness 2014, p. 180.
- War Department TM-E-30-480 Handbook on Japanese Military Forces September 1944 p. 400.
Sources
- Ness, Leland (2014). Guide to Japanese Ground Forces 1937–1945: Volume 2: Weapons of the Imperial Japanese Army & Navy Ground Forces. Helion & Company. ISBN 978-19099-8275-8.
- Taki's Imperial Japanese Army Page: Type 4 20 mm twin AA Machine Cannon - Akira Takizawa
- Taki's Imperial Japanese Army Page: Type 98 20mm AA Machine Cannon - Akira Takizawa
- War Department TM-E-30-480 Handbook on Japanese Military Forces, September 1944.