Product Description The SilencerCo piston is designed for quick, easy replacement so you can match your suppressor to different host firearms and thread patterns. Manufactured from durable 17-4 stainless steel and heat treated for long service life, this piston functions as part of the Nielsen device (booster) to help enable reliable semi-automatic cycling and unlocking pistol barrels. It features female threading to connect to SilencerCo threaded pistol barrels, and a Fixed Barrel Spacer should be used for fixed-barrel applications. Product Highlights Easy-to-swap suppressor piston for configuring compatible boosters to different host firearms Heat-treated 17-4 stainless steel construction for strength, durability, and wear resistance Part of the Nielsen device system to support semi-automatic pistol cycling Compatible with Omega K Series, Hybrid 46, Osprey Series, and Octane Series Also compatible with Hybrid 46M and Omega 36M when used with the Charlie Piston Mount Specs Brand: SilencerCo Product Type: Suppressor piston Thread Pattern: M13.5x1 LH (left-hand) Material: 17-4 stainless steel Heat Treated: Yes Compatibility: Omega K Series, Hybrid 46, Osprey Series, Octane Series; Hybrid 46M & Omega 36M with Charlie Piston Mount MPN: AC26 UPC: 817272010169 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.