SilencerCo 3 Lug Aplha Mount for a. 45 Cal, AC2448 Octane 45 Obsidian & other Alpha threaded cans. This will NOT fit a TBT TMP45. This adaptor is for the standard 45 ACP HK 3-lug style mount. The package is opened, but the mount was never mounted either in a can or on a 3-lug. It is pristine new. Original zip-lock pouch and wrench included. Please work with me to keep it that way! I pack carefully to minimize any chance of damage.