Product Description The Faxon Firearms Plan B to Hub Mount Adapter (FFMDSILHUBPB01) is a precision-engineered suppressor interface adapter designed to seamlessly connect Plan B muzzle devices to hub-mount suppressor hubs. Machined from premium 17-4 PH Stainless Steel (H1025) and treated with a durable Nitride finish, this adapter delivers outstanding corrosion resistance and long-lasting performance under demanding conditions. With precision-cut 1.375-24 UNS-2A external threads (primary) and 29/32-24 UNEF-2B internal threads (hub), it provides a rock-solid, wobble-free interface. Compatible with popular hub-mount systems such as the HARMONIX and CORESYNC, this adapter is designed and manufactured entirely in the USA by Faxon Firearms. Product Highlights Plan B to Hub Mount Interface: Bridges Plan B muzzle devices to hub-mount suppressor hubs including the HARMONIX and CORESYNC systems. Premium 17-4 PH Stainless Steel (H1025): Offers superior strength, hardness, and corrosion resistance for reliable long-term use. Precision Threads: Features 1.375-24 UNS-2A primary threads and 29/32-24 UNEF-2B hub threads for a precise, secure fit. Nitride Finish: Hard, wear-resistant surface treatment enhances durability and provides a sleek black appearance. Made in the USA: Designed and manufactured by Faxon Firearms in Cincinnati, Ohio, ensuring exceptional quality control. Specs Brand: Faxon Firearms Manufacturer Part Number (MPN): FFMDSILHUBPB01 UPC: 816341029569 Adapter Type: Plan B to Hub Mount Adapter (Standard Plan B Hub Mount) Material: 17-4 PH Stainless Steel (H1025) Finish: Nitride Primary Thread: 1.375-24 UNS-2A Hub Thread: 29/32-24 UNEF-2B Compatibility: HARMONIX, CORESYNC, and other hub-mount suppressor systems Country of Origin: Made in the 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. ]]>