The SU-76 (Samokhodnaya Ustanovka 76) was a Soviet self-propelled gun used during and after World War II. The SU-76 was based on a lengthened and widened version of the T-70 tank chassis. Its simple construction made it the second most produced Soviet armoured vehicle of World War II, after the T-34 tank. Crews loved this vehicle for its simplicity, reliability, and ease of use.