The 30mm 2A42 is the main weapon of the BMP-2 and several other Soviet-designed combat vehicles and helicopters. Capacity: In the BMP-2, the 2A42 feeds from two separate belts with a total capacity of 500 rounds. This enables the gunner to switch between two different ammunition types as a 1-tick action. Range: Open/Extreme. ROF: S/B2/B4 Speed: 8/12/18 Ammunition 30mm 2A42 ammunition weighs 0.8 kg per round, or 32 kg for a case of 33 linked rounds. Costs are per case.