 In German service, it was used mainly by Waffen-SS and "Fallschirmjäger" personnel along with Mauser M1932 "Schnellfeuer" machine pistol.The 9×18mm Makarov Stechkin automatic pistol (APS) is a Russian selective-fire machine pistol introduced into the Russian army in 1951.Like the other common Russian army pistol of this era, the Makarov, the Stechkin uses a simple unlocked blow-back mechanism and the double action trigger.