C&H Precision P320 R1P/DPP to RMR/SRO Adapter Plate with Rear Dovetail The C&H Precision SGX-RSH-GDT-ST is a black steel optic adapter plate for the specified SIG P320 Legion, M17 and M18 R1P/DPP-cut slide applications. It supports Trijicon RMR/SRO and the listed Holosun 407C, 507C and 508T optic applications. The plate includes a dovetail for GLOCK-compatible rear sights. It is intended for the specified slides that lose their rear iron sight when the cover plate is removed. That distinction makes slide configuration a central fitment requirement, rather than assuming every P320 X-Series slide uses the same plate. A firearm slide cut and an optic footprint are separate interfaces. This adapter provides the stated connection between them. Rear sight height and optic fit still depend on the exact combination of slide, plate and sight. Key Features Steel plate: The plate is made from mild-grade steel. R1P/DPP-cut application: For the manufacturer-specified P320 slide configurations. RMR/SRO optic interface: Supports the stated optics and listed Holosun models. Rear sight dovetail: Provides a dovetail for GLOCK-compatible rear sights. Specifications Manufacturer: C&H Precision Part number: SGX-RSH-GDT-ST Material: Steel Color: Black Application: Specified SIG P320 Legion/M17/M18 R1P/DPP slides Optics: Trijicon RMR/SRO; listed Holosun 407C/507C/508T models Compatibility For the manufacturer-specified P320 Legion/M17/M18 R1P/DPP-cut slides that lose the rear sight when the cover plate is removed. Confirm the exact slide cut, optic model and rear sight requirements. Shop the C&H Precision P320 R1P/DPP to RMR/SRO Adapter Plate with Rear Dovetail at BattleHawk Armory.