20 mm ShVAK
The 20 mm ShVAK was designed sometime between 1935 and 1936 and series production began in 1936. A few months later, production of the 12.7 mm version ceased. Similarly to its predecessors, the 20 mm ShVAK was a gas-operated gun, belt-fed by disintegrating link ammunition.
Country: USSR
Chief engineers: Boris Shpitalniy and Semyon Vladimirov
Years of production: 1936—1945
Crew: 4
Rate of fire: 850 rounds/min
Muzzle velocity: 790 m/s
Weight: 105 kg
