2A42

The 2A42 is a Soviet/Russian 30 mm autocannon designed for use on armored vehicles and helicopters. Developed by the KBP Instrument Design Bureau, it entered service in the early 1980s. It is a gas-operated, dual-feed weapon capable of firing a variety of ammunition, including high-explosive fragmentation, armor-piercing discarding sabot, and high-explosive incendiary rounds. The rate of fire is adjustable, typically around 550 rounds per minute, with a maximum effective range of approximately 4 kilometers against ground targets and 2 kilometers against air targets.

The 2A42 is notable for its versatility and has been widely integrated into numerous Russian and Soviet military platforms. It is commonly found on infantry fighting vehicles such as the BMP-2 and BMD-2, as well as various attack helicopters including the Mi-28 and Ka-50/52. Its robust design and significant firepower have made it a staple of modern armored and air assault forces. The gun's dual-feed mechanism allows for quick switching between ammunition types, enhancing its tactical flexibility in different combat scenarios. Its reliability and effectiveness have led to its continued production and widespread use.