The production of new Sd.Kfz. 138 Ausf.M tank hunter with 75mm Pak.40/3 gun was started in April 1943...The production of new Sd.Kfz. 138 Ausf.M tank hunter with 75mm Pak.40/3 gun was started in April 1943. The thickness of front armor was equal to 15mm. The ammunition supply consists of 27 rounds. In total 975 Sd.Kfz. 138 Ausf.M tank hunters were produced.