Stechkin

The Stechkin automatic pistol or APS (Avtomaticheskiy Pistolet Stechkina, Russian: Автоматический Пистолет Стечкина) is a Russian selective fire machine pistol. It bears the name of its developer, Igor Stechkin. The Stechkin automatic pistol was originally chambered for 7.62×25mm Tokarev. Designer Stechkin redesigned the pistol to accept the new 9 mm caliber used in the recently adopted Makarov pistol (PM), as it became clear that this cartridge was set to become the new service ammunition for handguns of the Soviet Army. In 1951, both the Makarov and Stechkin were introduced into the Soviet military arsenal, replacing the aging Tokarev pistol (TT-33).