The Trijicon RMR Mount AC32054 HK45 Pistol Mount is the purpose-built mounting solution that replaces the rear sight on the HK45 platform to allow direct mounting of any Trijicon RMR - the clean, integrated mounting approach that gives HK45 owners the red dot capability that modern defensive, duty, and competition pistols use demands without requiring any slide milling, machining, or permanent gunsmith modification to the pistol. The AC32054 replaces the factory HK45 rear sight with a purpose-built mounting platform that accepts the Trijicon RMR directly - the most integrated and low-profile red dot mounting approach available for the HK45 platform, while maintaining the pistol's overall profile and handling balance without the added height introduced by rail adapter solutions. For HK45 owners who want a clean, professional red dot installation without the expense and permanence of custom slide milling, the AC32054 delivers that result with a straightforward rear sight replacement. The RMR Mount AC32054 compatibility with any Trijicon RMR configuration gives HK45 owners the flexibility to run the specific RMR dot size and illumination type that best fits their shooting application - from the compact 3.25 MOA precision dot through the faster 6.5 MOA configuration that many defensive and duty shooters prefer for the balance of speed and precision it provides at realistic pistol engagement distances. The red dot mount AC32054 reflects the factory Trijicon dimensional precision and manufacturing quality that purpose-built platform-specific mounting hardware delivers — correct fitment to the HK45 rear sight mounting location and the secure, stable installation that reliable zero retention through the sustained recoil cycles produced by serious HK45 training and duty use demands. Features: Replaces the factory HK45 rear sight for clean, integrated RMR mounting Compatible with any Trijicon RMR configuration Purpose-built for HK45 platform's dimensional requirements No slide milling or permanent modification required Factory Trijicon dimensional precision and correct fitment Low-profile installation maintains pistol balance and handling Trijicon HK 45 RMR / P30 Pistol Mount AC32054