PISTON .578X28

In stock — ships from distributor

⚠ This item is a firearm and must ship to a licensed FFL dealer. You will pick your dealer at checkout.

<p>These pistons were 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 SilencerCo threaded barrels.</p><p>XL pistons are for firearms where the silencer requires additional length between the threaded barrel and the silencer.</p>