November 1941, in chelyabinskaya sverdlovsk uztm design bureau designed the kv-7. It is equipped with two 45 mm and one 76 mm cannon, two 7. 62 mm machine guns, 150 rounds of ammunition, all of the guns were placed behind a shield. 100 mm thick non-rotating turret, tank weight 45 tons, crew of 6 people. According to the instructions, kv-7 in december 1941 was sent to moscow for review, the result is considered to be a failure, leaders tend flamethrower tank kv-8. Stalin that why do i need three guns? Best to install one", thus the end of this tank.