Product DescriptionThe SilencerCo Delta Thread Adapter (AC77) is designed to adapt the FN Five-seveN factory muzzle threads to the common 1/2x28 thread pitch, allowing use with SilencerCo and other rimfire suppressors that mount on 1/2x28 threads. Built from steel with a matte black finish, it features O-ring engagement for a secure fit and includes a thread protector for when a suppressor is not installed.Product Highlights Converts FN Five-seveN muzzle threads from M10x1 to 1/2x28 for suppressor compatibility O-ring engagement helps provide a snug, reliable interface Steel construction with matte black finish for durability and corrosion resistance Includes thread protector to safeguard muzzle threads when not in use Compatible with SilencerCo and other rimfire suppressors threaded 1/2x28Specs Brand: SilencerCo Manufacturer Part Number: AC77 UPC: 817272010046 Product Type: Thread adapter Thread Conversion: M10x1 to 1/2x28 Compatibility: FN Five-seveN Material: Steel Finish/Color: Matte Black Included: Thread protector Country of Origin: United States of AmericaDisclaimer: 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.