The ISU-122 (acronym of Istrebitelnaja Samokhodnaya Ustanovka-122) was a Soviet assault gun used during World War II, mostly in the anti-tank role.
A prototype of the ISU-122 (Russian: ИСУ-122) heavy self-propelled gun was built at the Chelyabinsk Tractor Plant, in December 1943. The design shared the chassis of the ISU-152 self-propelled gun and differed only in armament, having an A-19 122-mm gun as its main weapon instead of the ISU-152’s ML-20 gun-howitzer.
Assembly: Chelyabinsk-Kirov plant (USSR)
Year of production: 1944
Armor: 90 mm
Engine: V-2IS (diesel)
Power: 525 HP
Max speed: 35 km/h
Range: 220 km
Weight: 46 t
Armament: A-19 (122 mm) + DShK AA (12.7 mm)