The Trijicon RMR Mount RM45 is the purpose-built dovetail base mounting solution that replaces the rear sight on Smith and Wesson M& P pistols to allow direct mounting of any Trijicon RMR or SRO - the clean, integrated M& P 2.0 RMR Plate solution that gives Smith and Wesson M& P owners the red dot capability that modern defensive, duty, and competition pistol use demands without any slide milling, machining, or permanent gunsmith modification. The RM45 replaces the factory Smith and Wesson M& P rear sight with a purpose-built dovetail base mounting platform that accepts any Trijicon RMR or SRO directly - the most integrated and low-profile red dot mounting approach available for the Smith and Wesson M& P platform that maintains the pistol's overall profile and handling balance without the added height that rail adapter solutions introduce. For M& P owners who want a clean, professional red dot installation at a fraction of the cost and permanence of slide milling, the RM45 delivers that result through a straightforward rear sight replacement. The Pistol scope mount RM45 steel construction reflects the durability requirement that serious duty and defensive carry pistol mounting hardware specifically demands - the material strength that handles the sustained recoil cycles and hard handling that serious M& P training and duty use consistently produces while maintaining the dimensional stability and zero retention that a primary carry pistol red dot mount requires. At 34 grams, the RM45 keeps the overall weight addition minimal while delivering the structural integrity that steel construction provides. The red dot mount RM45 accommodates any Trijicon RMR or SRO configuration - giving M& P owners the flexibility to choose the specific Trijicon optic that best fits their shooting application. Features: Replaces the factory M& P rear sight for clean, integrated mounting Compatible with any Trijicon RMR or SRO configuration Steel construction for maximum durability and zero retention Purpose-built dovetail base for Smith and Wesson M& P pistols No slide milling or permanent modification required Lightweight 34-gram steel construction Trijicon RMR Smith & Wesson M& P Pistol Mount RM45