Introduced in late 1943 in response to German Panther and T iger tanks, Russia’s ‘IS’ series replaced the earlier ‘KV’ series and featured heavier armour and crucially, more powerful main guns. The IS - 2 mounted the formidable ex - Naval 122mm main gun, which was capable of defeating the armour of both German tanks and came as a real shock to German tank crews when first encountered! Revell’s detailed kit features full chassis, rotating turret, elevating main gun, one - piece injection moulded tra cks that can be shaped to show characteristic track sag and DsHK heavy machine gun.