Product Description The Rugged Suppressors OP007 suppressor piston features a non-slotted design that creates a full-circumference gas seal to help drastically reduce gas blowback for a more enjoyable shooting experience. Machined from durable 17-4 stainless steel and heat treated for long service life, this copper-finished piston is built for demanding use. When using a piston on a fixed-barrel platform (such as a carbine or subgun), the spring must be replaced with a fixed barrel spacer. Product Highlights Non-slotted piston design provides a full-circumference gas seal to help reduce gas blowback Machined from rugged 17-4 stainless steel for strength and corrosion resistance Heat-treated construction for long-lasting performance under hard use 9/16"-24 TPI thread pitch for compatible host firearms Copper finish for a distinctive look and easy identification Specs Brand: Rugged Suppressor Product Type: Suppressor Piston Manufacturer Part Number: OP007 UPC: 859383006334 Thread Pitch: 9/16"-24 TPI Material: 17-4 Stainless Steel Finish/Color: Copper Fixed-Barrel Note: Requires a fixed barrel spacer (spring replacement) when used on fixed-barrel platforms Country of Manufacture: Not specified by manufacturer 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.