Comparing: Rheinmetall Skorpion vs. SU-101

Development of the second series of self-propelled guns on the basis of the Panther tank was started by the Rheinmetall company in January 1943. The design plans for the 12,8 cm Skorpion were completed on April 2, 1943. Existed only in blueprints.

In 1944 the Construction Bureau of the Ural Heavy Machinery Plant developed the SU-101 with the D-10S gun and the SU-102 with the D-25S gun. Both vehicles were designated as Uralmash-1. Prototypes were manufactured in April 1945. The vehicles never entered mass production nor saw service.