The ISU-122 was produced at the same time as the IS-1 and IS-2 heavy tanks, and had the advantages of being much simpler to construct, while also carrying more ammunition. This was a significant wartime advantage, but the ISU-122 simply didn’t have the versatility of a tank. A second version, the ISU-122S, had a semi-automatic breech block, and thus a faster rate of fire, but it still offered no significant advantage once the war was over. Unlike its contemporary, the ISU-152 self-propelled artillery gun, most of both variants of the ISU-122 were converted into engineering tanks or mobile command bunkers.
Models available:
