HUXWRX Piston M13.5-1 LH Thread Black

The HUXWRX Piston is made from 17-4 Stainless Steel and is heat treated then black nitride finished for improved wear and corrosion resistance. HUXWRX pistons come with wrench flats that allow for a more secure attachment to your firearm. Features-Interchangeable with SilencerCo and Rugged pistons-Interchangeable between RAD 9 & 45-Pair with a Piston Spring for reciprocating barrels or Fixed Barrel Spacer for fixed barrels-Wrench flats