Tanker's Tuesday:

 

 

The KV-1 model 1939 and 1940

At first, the 76.2 mm (3 in) F-32 was chosen as main armament, but due to delays in production, the first 50 preseries models and all remaining model 1939s were equipped with a medium-velocity “short” barrel L-11 of the same caliber, fitted with a recognizable recuperator above the barrel. The F-32 was able to fire AP (F-342 rounds) and HE shells. The BR-3502 AP rounds were capable of reaching 612 m/sec (2007 ft/s), giving them a 66 mm (2.6 in) armor-piercing capacity at 500 m (1640 ft). Secondary armament comprised a coaxial DT 7.62 mm (0.3 in) machine gun, another in a rear turret ballmount, another mounted in a hull ballmount and an extra AA mount on the model 1942.

KV1