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The S4M ((ロシア語:С4М)) was a Soviet insurgency weapon pistol, designed to be used expressly for the purpose of assassination. It was a simple break-open, two-shot derringer, but the unique features came from its specialized ammunition, designed around a cut-down version of the 7.62mmx39 rounds used in the Soviet AK-47. The casings of the round contained a piston-like plunger between the bullet and the powder that would move forward inside the casing when fired. The piston would push the round down the barrel and plug the end of the casing, completely sealing off any explosive gases in the casing. This, combined with the inherently low-velocity round resulted in a truly silent pistol. The nature of the gun and ammunition led to it being wildly inaccurate outside of point-blank range. To add further confusion and throw possible suspicion away from the assassin, the barrel rifling was designed to affect the bullet in such a way that ballistics experts would not only conclude that the round was fired from an AK-47, but that the round was fired from several hundred feet away. Due to the politically devastating nature inherent in this design, the S4M was kept highly secret. Information on the pistol was not known by western governments until well after the end of the Cold War. The S4M was succeed by a less powerful, but otherwise fairly similar, MSP using the newer SP-3 ammunition in 7.62 x 39 mm, which also used in the NRS knife.〔Maxim Popenker (2008), (Special purpose small arms ammunition of USSR and Russia ); updated version of an article first appeared in the March 2005 issue of ''The Cartridge Researcher'', the Journal of ECRA (the European Cartridge Research Association)〕 ==See also== *PSS Silent Pistol *TKB-506 *List of Russian weaponry 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「S4M」の詳細全文を読む スポンサード リンク
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