C&H PLT RMR TO HOLO 407K/507K

Description

The C&H Precision RMR to Holosun K Series adapter plate solves a specific problem: you have a slide already milled to the Trijicon RMR footprint, and you want to mount a Holosun 407K or 507K — optics that use a smaller, distinct footprint that won’t drop directly into that cut. This plate bridges the two, letting you run a compact Holosun K-series optic on an RMR-pattern slide without re-milling.

C&H Precision machines these plates on HAAS CNC equipment at their facility in coastal Georgia. The finished surface receives an anodized coating, which bonds to the aluminum at the material level rather than sitting on top of it, providing corrosion resistance that holds up to holster wear and repeated handling. Mounting hardware is included in the box.

Because adapter plates stack tolerances — the slide cut, the plate itself, and the optic base all contribute — C&H recommends dry-fitting everything before final installation. That’s sound practice with any adapter plate regardless of brand, and it’s worth taking seriously here: if the optic sits unlevel or the screws don’t pull down evenly, address it before torquing to final spec. If you’re also running iron sights, co-witness height will depend on the combined stack of your specific slide cut, this plate, and the optic body, so verify that geometry before committing to a sight purchase.

The plate is compatible with slides already cut to the RMR footprint and is designed specifically to accept the Holosun 407K and 507K. It is not intended for the full-size 407C or 507C series, which share a different footprint from the compact K variants.