Serdyukov

The SPS is a short recoil operated, locked breech pistol. The slide to barrel locking is achieved by the tilting locking piece, located under the barrel, much like the Walther P38 or Beretta 92. The return spring is located around the barrel. Frame is made from steel upper part and the polymer grip and the trigger guard. Slide is made of steel. Double action trigger featured automatic Glock-like trigger safety, plus internal firing pin safety and the automated grip safety. No manual safeties are provided on the gun. Until the very recent production guns, SR-1 also lacked the slide stop. The external hammer can be put on the half-cock position for increased safety. It must be noted, that the DA mode will fork only if the hammer is on half-cock. The gun is fed using steel, double stack magazines that hold 18 rounds of 9x21 mm ammo. 9x21mm ammunition is available in basic Armour Piercing form, as well as with expanding increased stopping power bullets, non-ricocheting training bullets, and some other types. The one downside of this ammo is that it is quite expensive, at least now, having cost several times more than of any commercially available 9x19mm ammo.