The C&H Precision optic mounting plate enables seamless conversion of your Walther PPQ Q4 or Q5 pistol to accommodate popular red dot sights with precision-machined 6061 aluminum construction.C&H Precision Optic Mount Plate for Walther PPQ/Q4/Q5Compatible with Trijicon RMR/SRO Holosun 507C/407C/508C/508T/507CompAlso fits C&H EDC-XL and COMP opticsPrecision machined 6061 aluminum with anodized finishStainless steel mounting hardware includedMade in USA with rigorous quality controlManufactured in Coastal Georgia by C&H's family-owned business using HAAS CNC machines and multiple quality checks ensuring the tightest tolerances for reliable optic mounting on your Walther pistol.