KV-7 was a unique self-propelled artillery vehicle that was modified a large number of times. Its turret had three guns (!) so the tank had to become a serious threat for the enemy. But in spring 1942, when they discussed the perspectives and test results of so-called "Object 227" (KV-7) there was said a phrase that spelt the death for the vehicle - someone rulling the country
asked: "Why do we need two or three guns? One good gun is a better idea". A number of sources put these words into Stalin's mouth. It should be mentioned that many Soviet commanders shared that opinion. So the project was finally closed, the first vehicle KV-7 was disassembled to be subsequently used as a platform for testing some other equipment.