The C&H Precision optic mounting plate is precision-machined for Sig Sauer P320 X-Series pistols including X-FIVE M17 and M18 models. This anodized aluminum adapter allows Romeo1Pro/DPP cut slides to mount popular red dot optics.C&H Precision Sig P320 X-Series Optic Mounting PlateCompatible with Trijicon RMR/SRO Holosun 507C/407C/507 Comp/508T/EPS/EPS CarryFits Sig P320 X-FIVE M17 M18 Romeo1Pro/DPP cut slidesCNC machined from 6061 aluminum with anodized finishIncludes stainless steel mounting hardwareMade in USA with precision tolerances and quality controlPerfect for upgrading your Sig P320 X-Series pistol with modern red dot optics delivering reliable mounting with American-made precision and quality.