61-K 37mm AA Gun Model 1939

Caliber, mm
37
Barrel length w/ flame suppressor, mm
2729
Weight when deployed, kg
2100
Cartridge, rds
5
Rate of fire, rds/min
160-170
Elevation angle
-5 +85
Deflection angle
360
Projectile's initial velocity, m/s
880
Range, m
4000
Crew
8

Designed in 1938-1939 at the factory No.8 under the factory designation of ZIK-37. The gun's chief competitor was considered to be the Bofors 40mm gun. According to the joint tests conducted in 1940, it was determined that the Bofors did not possess any advantages over our gun in main parameters. The ammunition load consisted of UOR-167 fragmentation tracer rounds and UBR-167 armor piercing rounds.