The KV hefty tank is made and used as hefty break-through tank. To a tank associated with the task, the shortcomings of its L-11 main weapon, that will be not good at coping with enemies' bunkers and fortifications, might be lethal! So a heavy tank keeping a much bigger weapon to raised perform the work had been made with the 76.2 mm tool tanks. 1st associated with the type makes use of a new big high turret of 7 edges that mounting the 152mm M-10 howitzer. This variation, which had many information distinctions on later standard sort have been frequently dubbed KV 'Big Turret' or KV-2 Model 1939. As a result an enormous turret on typical KV hull became actually un-maneuverable it quickly earned a funny nickname of "Cellphone washroom"!