SilencerCo - Piston - .578x28

SilencerCo Piston .578x28 AC24 is designed to be easily changed for different host firearms or calibers. Pistons are built with 17-4 stainless steel, then heat-treated for maximum durability. The piston is part of the Nielson device that moves and allows semi-automatic cycling for unlocking pistol barrels. Throw a Fixed Barrel Spacer on for fixed barrel applications. SilencerCo pistons have female threading that attaches to our SilencerCo threaded barrels.

Notable Features Include:

• Fits Osprey/Octane
• .578x28 Thread Pitch