Unlock greater optic flexibility for your SIG Sauer P320 Legion, M17, or M18 pistol with the C&H Precision Steel Optic Adapter Plate. This precision-engineered mounting solution converts the factory Romeo1 Pro / DeltaPoint Pro (R1P/DPP) slide cut into a standard Trijicon RMR footprint, allowing you to securely mount popular red dot sights without custom milling. Key Features Robust Steel Construction: Fabricated from durable mild-grade steel for superior strength and long-term reliability under recoil and demanding use. Precision CNC Machining: Produced on HAAS CNC equipment to tight tolerances, ensuring a perfect fit and consistent performance. MIL-SPEC Finish: Hard anodized black coating provides corrosion resistance and a professional appearance. Comprehensive Hardware Kit: Includes stainless steel mounting screws for the plate and multiple optic options, plus compatibility with Glock-style rear sights via integrated dovetail. Ultra-Thin Profile: Measures approximately 0.095-0.099 inches thick to minimize height-over-bore while maintaining structural integrity. Optic Compatibility This adapter supports the Trijicon RMR and RMR-cc footprints along with compatible models such as the SRO, Holosun 407C, 507C, 507Comp, and 508T. It solves the common pain point of limited optic choices on factory SIG cuts, delivering a rock-solid zero that withstands repeated firing cycles. Specifications Material: Mild-grade steel with stainless steel hardware Finish: MIL-SPEC Type III hard anodized black