Rubicon StuG III Ausf G – Early / Mid / Late ProductionRubicon Models StuG III Ausf. G Early Mid Late prodThe StuG III was designed to fill an infantry close support combat role, early models were fitted with a low velocity 75 mm StuK 37 L 24 gun to destroy soft skin targets and fortifications. After the Germans encountered the Soviet KV 1 and T 34 tanks, the StuG III was first equipped with a high velocity 75 mm StuK 40 L 43 main gun (Spring 1942) and in Autumn 1942 with the slightly longer 75 mm StuK 40