The KV kind tank that research to produce victories inside the competition of the heavy type tank from factory of Kirov in 1939, ising called after KV-1.KV-1 the beginning batch quantity produces in 1942 February, in the beginning of the production model quantity calls the KV-1 model 1941 " little Turret", first product in KV-1 kinds L-11s 76.2 mm of artillery; July of 1940, the hefty enter the band of KV tank manufacturing be transfered by the factory of Kirov the 100 factory production, henceforth the KV-1 that produce all changed to pack better types F-32s in function 76.2 mm of artillery.