The Kimber KDS9c Optic Adapter Plate with Fixed Rear Sight for RMR Footprint is a precision-machined mounting plate that converts the KDS9c for use with Trijicon RMR and Holosun C-pattern footprint red dot sights. Each plate is precision machined to the tightest tolerances on HAAS CNC machines using 6061 aluminum with an S7 tool steel T-nut for superior attachment and a MIL-SPEC Type III hard anodized black finish. All required mounting hardware is included, making it a complete, drop-in optics-ready solution for KDS9c owners. Kimber KDS9c Optic Adapter Plate w/fixed Rear Sight for RMR Footprint 4200591