The KV-13 program's KV-85 prototype was accepted for production as the IS-1 heavy tank. After testing with both 100 mm and 122 mm guns, the D-25T 122 mm gun was selected as the main armament of the new tank, primarily because of its ready availability and the effect of its large high-explosive shell when attacking German fortifications. The KV-122 replaced the KV-85, and began mass production as the IS-2. Item No 01570 Item Name Soviet KV-122 Heavy Tank Bar Code 9580208015705 Scale 1:35 Item Type Static Kits Model Brief Length:277.7 mm Width: 94.8mm Total Parts 440+ Metal Parts gun barrel, brass wire Photo Etched Parts 1 piece Film Parts n/a Resin Parts n/a Total Sprues 23 sprues , turret and lower hull Released Date 2013-01 More Features "The kit consists of over 440 parts the kit w/refined detail multi-slide moulded lower hull 192 individual tracks links Photo Etched Parts included"