Product Description The Rugged Suppressors OP004 Suppressor Piston is designed with a non-slotted profile that creates a full-circumference gas seal to help reduce gas blowback for a more enjoyable shooting experience. Built from heat-treated 17-4 stainless steel with a copper finish, this piston is engineered for long-term durability and reliable performance. When using a piston on a fixed-barrel platform (such as a carbine or subgun), replace the spring with a fixed barrel spacer. Product Highlights Non-slotted piston design creates a full circumference gas seal to help reduce gas blowback Heat-treated 17-4 stainless steel construction for durability and wear resistance M13.5x1 left-hand (LH) thread pattern for compatible threaded barrels Copper finish for easy identification and a distinctive look Fixed-barrel use requires swapping the spring for a fixed barrel spacer Specs Brand: Rugged Suppressors Product Type: Suppressor piston Thread Pattern: M13.5x1 LH Material: 17-4 stainless steel Finish: Copper Manufacturer Part Number: OP004 UPC: 859383006303 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 products manufacturer.