This Presma cover plate fills an RMS/RMSc optic cut on a Glock-pattern slide when no red dot is mounted. It keeps the optic pocket sealed and the slide looking finished while protecting the cut from debris. The plate is machined from 6061 aluminum with a black anodized finish and chamfered edges. Features: Fills a Shield RMS/RMSc optic cut 6061 aluminum, black anodized Chamfered edges Mounting screws included Fits Glock-pattern slides milled for the Shield RMS/RMSc footprint only. This plate does not fit RMR-cut slides. Confirm your slide's optic cut before ordering. GLOCK is a registered trademark of GLOCK Inc. 3CR Tactical is not affiliated with, endorsed by, or sponsored by GLOCK Inc. Any reference to GLOCK products is for identification and compatibility purposes only.