Latest SILENT Weapons - From Russia With Punch:

I am reading that there is a new silent pistol in Russia developed from the PSS . The new model PSS-2 is also using a new iteration of the 'CAPTIVE PISTON' sub-sonic ammunition.

Original PSS With SP-4 Ammunition.

The new PS-16 ammunition is said to have the sharp edged "wedge" or chisel point projectiles to enhance penetration:

7.62x43 mm Captive Piston Ammunition - Has A Wedge or Chisel Shaped Nose.

N.B. this Is A .32" Caliber Weapon.

PSS-2 "SILENT' Pistol

Six Round PS-2 Has No External Safety Switch 

But Uses A Firing Pin Block Combined With A Grip Safety

Cut-Away Drawing 7.62x43mm PS-16 Cartridge. Captive Piston Colored RED

Earlier 7.62x41mm SP-4 Cartridge Sectioned

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Silent as opposed to Silenced.

Based ON MTs-116M Rifle

SILENT Big Bore 12.7 mm (.50 Cal.) 

Captive Piston Rifle Cartridge

Reports are arriving that Russia is also using a captive piston cartridge design in a 50 Caliber rifle cartridge for silent sniping:

This is where the new 12.7mm round, (better known as the .50 cal.,) steps in. Of course it’s a huge heavy bullet, associated with heavy machine guns and long-range sniper rifles.

 The bullet weighs about five times as much as a typical .308 bullet - and even at subsonic speed it provides plenty of momentum. The rifle's makers told Russian state newspaper TASS that the new rifle is not only lethal out to 300 meters (985 feet), but at that distance the special subsonic bullet will go through even “high-quality” body armor.

- So how have they made this big bore weapon quiet? In these silent cartridges, the powder gases remain inside the case and a special captive piston is used to push the bullet up the bore. A rifle with such a cartridge does not produce any flame or shot sound. The thing that can be heard is the clattering of moving mechanical parts in the receiver - for example the bolt and striker.

According to the factory representative, the MTs-116 rifle’s silenced large-caliber version is expected to be used by special units mainly in urban conditions. This rifle can stealthily hit an enemy even when wearing good protective gear (a high-class armor vest) at distances of up to 300 meters. The bullet’s large 12.7mm caliber and its high weight compensate for its low speed and retain its destructive effect.

- Coming to a conflict zone near you, shhhhh.

Marty K.