The 30 mm caliber is a range of autocannon ammunition. It includes the NATO standardized Swiss 30×173mm, the Soviet 30×155mmB, 30×165mm and 30×210mmB, the Czechoslovak 30×210mm, the Yugoslav 30×192mm, the British 30×113mmB, and the French 30×150mmB and 30×170mm cartridges.

The Kamov Ka-50 "Black Shark", NATO reporting name Hokum A, is a Soviet/Russian single-seat attack helicopter with the distinctive coaxial rotor system of the Kamov design bureau. It was designed in the 1980s and adopted for service in the Russian army in 1995. The Ka-50 is manufactured by the Progress company in Arsenyev. It is used as a heavily armed scout helicopter, and is notable for having a rescue ejection system, rare for helicopters.