Silent Wedge Shaped Bullets - PSS-2 (2011) ( lemmy.world )

The PSS-2, as the name implies is the next generation of the PSS design which was adopted in the 1980s. The original gun boasted the ability to be shot silently without a suppressor due to its special piston based 7.62x42 SP4 ammo.

https://lemmy.world/pictrs/image/cb0c32db-abff-4d72-a6dd-34eb22e66318.webp

https://lemmy.world/pictrs/image/1dad50b3-6b9a-4cf1-98cf-7383e395133a.jpeg

https://lemmy.world/pictrs/image/264999a7-8c3e-4b06-87f1-55a49db19afd.webp

In order for the PSS to achieve this it needed to use heavy cylindrical bullets to increase the mass to stay subsonic and avoid a supersonic crack. This resulted in the bullets preforming poorly against armor this is where the PSS-2 steps in. It put a wedge shaped tip on its bullets to maintain mass while reducing the surface area that'd touch the vest on initial impact to increase penetration.

https://lemmy.world/pictrs/image/92d2c672-c555-48a1-9e9e-eda9facec519.webp

7.62x43 SP-16 ammo for the PSS-2

The PSS-2 is a recoil-operated weapon that utilizes an open breech system and is mechanically similar to its predecessor, the PSS. Its unique design includes a mechanism that slows the slide’s movement in its final stages to prevent clanging noise.

https://special-ops.org/pss-2-the-successor-to-the-famous-pss-silent-pistol/