Product DescriptionThe Yankee Hill Machine (YHM) Sidewinder Direct Thread Adapter converts compatible YHM pistol suppressors to a fixed thread mount for use on fixed-barrel pistol caliber rifles and pistols. To install, simply replace the suppressor&&';;s spring retainer, spring, and piston with this direct thread adapter to create a secure 1/2x28 interface. Constructed from precipitation-hardened stainless steel and finished in a durable matte black coating, it offers a compact, lightweight solution for reliable alignment and repeatable performance.Product Highlights Direct thread adapter for converting compatible YHM pistol suppressors to fixed-barrel use 1/2x28 thread pitch for common pistol-caliber carbine and rifle muzzle threading Stainless steel construction for strength and corrosion resistance Compact 3/4 inch length helps maintain a low-profile setup Made in the USA with a matte black finish Specs Brand: Yankee Hill Machine Co Manufacturer Part Number: YHM-3251 UPC: 816701019667 Product Type: Suppressor direct thread adapter / fixed thread mount Thread Pitch: 1/2x28 Material: 17-PH / 17-4PH stainless steel Finish/Color: Matte Black Length: 3/4 in (0.75 in) Weight: 1.86 oz Compatibility (as listed): YHM Sidewinder; also listed by retailers as fitting Cobra and Cobra M2 Country of Manufacture: USA 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.