The OSight RMR to RMSc/RMSk Footprint Adapter Plate (brand part no. RMRTORMSC) from OSight lets a pistol slide already cut for the RMR footprint accept optics built to the smaller RMSc/RMSk mounting pattern. It’s a practical fix for shooters who want to run a Shield RMSc/RMSk-pattern red dot on a slide they’ve already had milled for RMR-footprint optics, without paying for a second cut. The plate bolts in using the existing RMR screw holes and adapts the mounting surface to the smaller pattern.

Key Specifications

• Converts an RMR-pattern optic cut to accept RMSc/RMSk-footprint red dot sights.
• Uses the existing RMR mounting screw holes, so no additional slide machining is needed.
• Low-profile plate design, keeping the optic mounted close to the slide’s factory height.
• Bolt-on installation, requiring only a screwdriver and no gunsmithing.
• Purpose-built adapter, engineered specifically for the RMR-to-RMSc/RMSk footprint conversion rather than a universal fit.

Frequently Asked Questions

What does this adapter plate do? It converts a slide already cut for the RMR footprint so it can mount an RMSc/RMSk-pattern red dot instead.

Do I need to re-mill my slide to use this? No, it installs using the existing RMR-cut mounting holes.

Does installation require gunsmithing? No, it’s a bolt-on installation using a screwdriver and the existing mounting holes.

Buy the OSight RMR to RMSc/RMSk Footprint Adapter Plate

Order the OSight RMR-to-RMSc/RMSk adapter plate from our Lubbock, Texas gun shop and get more red dot options on your existing RMR-cut slide. Check out the rest of our red dot mounts selection for more footprint solutions.