C&H Precision CHP Adapter Plate, Converts the Walther PDP 1.0/PPQ (Q4/Q5) to the Trijicon RMR/SRO, Holosun 407C/507C/508C/508T, C&H EDC-XL/COMP, Anodized Finish, Black, Includes Mounting Hardware WLPDP-RSH