SilencerCo AC26 Osprey/Octane Piston M13.5x1 LH 9mm Stainless Steel - AC26

This is a suppressor piston assembly designed for SilencerCo Osprey and Octane suppressors in 9mm, featuring M13.5x1 left-hand threads for compatibility with Sig, HK, Walther, and Glock factory threaded barrels. Constructed from 17-4 stainless steel and heat-treated for durability, the piston is part of the Nielsen device that cycles semi-automatically and contains female threads that attach directly to the host firearm's muzzle. Pistons are easily interchangeable to accommodate different host weapons and calibers.