| 2A28 Grom | |
|---|---|
 Detailed view of a BMP-1 turret showing the 73 mm gun tube of the 2A28 | |
| Type | Smoothbore low-pressure cannon |
| Place of origin | Soviet Union |
| Service history | |
| Used by | See BMP-1 Service History |
| Wars | See list of conflicts |
| Production history | |
| Designer | KBP |
| Designed | Early 1960s |
| Manufacturer | KBP |
| Produced | 1966–present |
| Specifications | |
| Mass | 115 kg |
| Length | 1195 mm |
| Width | 218 mm |
| Height | 322 mm |
| Shell | PG-15V (HEAT), OG-15V (HE-FRAG), PG-15VN (HEAT-DP)[citation needed] |
| Caliber | 73 mm |
| Barrels | 1 |
| Elevation | -4° to +15° (aimed fire), +33° (maximum non-aimed)[citation needed] |
| Traverse | 20 °/s horizontal, 6 °/s vertical |
| Rate of fire | 8 rounds per minute[citation needed] |
| Muzzle velocity | 400 m/s at the muzzle, 665 m/s maximum (PG-15V); 290 m/s at the muzzle (OG-15V)[citation needed] |
| Maximum firing range | 1300 m (PG-15V), 4500 m (OG-15V)[citation needed] |
| Sights | 1PN22M, 1PN22M2[citation needed] |
The 2A28 Grom also known as KBP 2A28 Grom, is the main armament of the Soviet-designed BMP-1 and BMD-1 infantry fighting vehicles. It is a 73 mm low pressure smoothbore semi-automatic gun with a wedge breech block.[1] Development of the 2A28 Grom was directly linked to that of the SPG-9 recoilless gun; both fired projectiles similar to rocket-propelled grenades.[2]
- ^ Christopher F. Foss (1976). Jane's World Armoured Fighting Vehicles (1976 ed.). Macdonald and Jane's Publishers Ltd. pp. 260–261. ISBN 0-354-01022-0.
- ^ Institute for Defence Analyses, various (1995). Soviet/Russian Armor and Artillery Design Practices: 1945-1995. Quantico: United States Marine Corps Intelligence Agency. p. 22. OCLC 33890115.