Product Description The Otter Creek Arms OCL901 Over The Barrel (OTB) Adapter is a precision-machined, one-piece adapter engineered for reliable compatibility with the Ops Inc 12th Model, AEM5, and OCM5 suppressors. Built from H900 heat treated 17-4 stainless steel, this adapter offers outstanding strength and long-lasting durability in a streamlined, single-piece construction. The distinctive raw heat treat gold finish adds a premium appearance while contributing to the adapter&';s overall resilience. Integrated wrench flats machined into the rear allow for quick and hassle-free installation or removal using any standard adjustable crescent wrench. Designed to mount to any barrel with 1/2x28 threads measuring .75 inches OD or less, with a minimum of 2.95 to 3 inches of exposed barrel length. Product Highlights One-piece Over The Barrel (OTB) design provides a solid, secure mount on 1/2x28 threaded barrels up to .75" OD Manufactured from H900 heat treated 17-4 stainless steel for superior strength, hardness, and corrosion resistance Raw heat treat gold finish delivers a distinctive, durable appearance with no additional coatings required Compatible with Ops Inc 12th Model, AEM5, and OCM5 suppressors for broad mounting versatility Integrated rear wrench flats enable fast, tool-friendly installation and removal with any adjustable crescent wrench Specs Brand: Otter Creek Arms LLC MPN: OCL901 UPC: 664533659106 Material: H900 Heat Treated 17-4 Stainless Steel Finish: Raw Heat Treat Gold Thread Compatibility: 1/2x28 Maximum Barrel Outer Diameter: .75 inches Minimum Exposed Barrel Length: 2.95 to 3 inches Compatible Suppressors: Ops Inc 12th Model, AEM5, OCM5 Construction: One-Piece 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.