76 mm air defense gun M1931
| 76 mm air defense gun M1931 (3-K) | |
|---|---|
76 mm M1931 at Kempele, Finland. | |
| Type | Anti-aircraft gun |
| Place of origin | Soviet Union |
| Service history | |
| In service | 1932 – 1977 |
| Used by |
|
| Wars | Spanish Civil War Winter War World War II |
| Production history | |
| Designer |
|
| Designed | 1931 |
| Manufacturer | Red Putilovite plant |
| Developed into | 76 mm air defense gun M1938 |
| Produced | 1931 – 1938 |
| Specifications | |
| Mass |
|
| Barrel length |
|
| Crew | 10 |
| Shell | Fixed QF 76.2×558mmR |
| Shell weight | 6.6 kg (14 lb 9 oz) |
| Caliber | 76.2 mm (3.00 in) |
| Breech | Semi-automatic vertical sliding-wedge |
| Recoil | Hydro-pneumatic |
| Carriage | Two-wheeled carriage with collapsible cruciform outriggers |
| Elevation | −3° to +82° |
| Traverse | 360° |
| Rate of fire | 10 – 20 rpm |
| Muzzle velocity | 815 m/s (2,670 ft/s) |
| Maximum firing range | 9.3 km (31,000 ft) AA ceiling |
The 76 mm air defense gun M1931 (3-K) (Russian: 76-мм зенитная пушка обр. 1931 г. (3-K)) was an anti-aircraft gun used by the Soviet Union during the Winter War and the first stages of World War II.