Russian Internally Suppressed, Captive Piston Quiet Weapons
Posted: Thu Sep 10, 2015 3:48 pm
http://weaponsman.com/?p=25379


A very brief history of the internally suppressed, captive piston ammunition and firearms in Russia.
During 1950s, the famous Soviet gun designer Igor Stechkin5 was tasked to design several deep concealment, noiseless weapons for KGB and GRU6; He then produced an experimental SP-1 cartridge7, similar in concept to that of the Mitin brothers. It used a specially designed bullet which could be squeezed through a constricted bore with an entry (throat) diameter of 9mm and exit (muzzle) diameter of 7.62mm.

