Vortex Rmr-dpp Red Dot Adapter PlateBUILD YOUR ACCUARCY ON A SOLID FOUNDATION The RMR DPP Red Dot Adapter Plate allows the use of optics with a DeltaPoint Pro footprint on handgun slides cut for the Vortex Viper, Defender footprint. This plate will convert RMR and SRO footprinted guns to DPP for easy fitment of the Defender red dots. Included: Adapter Plate & Most Common Handgun Mounting Screw Sets