C&H PLT SPGFLD HELLCT RMSC TO HOLO K

Description

The Springfield Hellcat’s RMSc slide cut opens up a wide range of optic options, but the Holosun 407K and 507K use a different footprint — this adapter plate from C&H Precision bridges that gap without requiring any milling. It fits the Hellcat, Hellcat Pro, and Hellcat RDP, and seats the optic directly over the existing slide cut using the hardware included in the box.

C&H Precision machines these plates on HAAS CNC equipment and runs each one through multiple quality checks before it ships. The mounting hardware is user-replaceable, so a damaged screw does not mean replacing the plate — a practical consideration for a part that will see repeated installation and removal over the life of the optic. Thread locker is included.

Because the plate raises the optic relative to the factory slide profile, it will affect iron sight co-witness height. Whether your current sights will co-witness, lower-third co-witness, or clear the optic entirely depends on the combination of slide, plate, and optic height — worth verifying before committing to a sight setup. C&H recommends dry-fitting all components before final installation, which is good practice any time you are stacking tolerances across a firearm, a plate, and an optic from three different sources.

The 407K is a single-reticle dot; the 507K adds a circle-dot reticle option. Both mount identically on this plate, so the choice between them does not affect fitment.