Achieve perfect co-witness on your PPQ 4 or 5 with our specially designed plate for the RMS, RMSc and SMS optics. This mount sits flush with the RMSc and SMSc models. It is also compatible with the standard RMS, SMS, SMS2 and Jpoint sights, although there may be slight width overhang. Please note, the RMSw will also fit on this mount, but it may not achieve a perfect seal due to the narrower width of the plate compared to the RMSw and its gasket.