This SilencerCo piston is precision-machined from durable 17-4 stainless steel and designed for use with 9mm caliber handguns. Compatible with SilencerCo Osprey and Octane suppressors, this piston features a 1/2"x28 XL thread pattern, ensuring reliable function, longevity, and smooth suppressed operation. Product Features Constructed from high-strength 17-4 stainless steel Designed for 9mm caliber handguns Compatible with SilencerCo Osprey and Octane suppressors 1/2"x28 XL thread pattern Precision-machined for reliable performance Corrosion-resistant stainless finish Product Specifications Brand: SilencerCo Category: Bolts & Pistons Series: Piston .5x28XL Model: Osprey / Octane Caliber: 9mm Material: Stainless Steel (17-4) Finish: Stainless Thread Pattern: 1/2"x28