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For a compact assassination pistol, the Soviet PSS with its companion SP4 silent ammunition is a hard combination to beat. While the PSS resembles a somewhat large conventional blowback pistol, it is definitely unique. The weapon is 6.7 inches long and weighs 30 ounces. Its size is comparable to a SIG P226 pistol, but the specialized ammunition delivers a close range lethal projectile with almost no sound signature….