C&H PLT SIG P320X TO RMR/SRO/HOLO

Description

The C&H Precision adapter plate is built for shooters running a SIG P320 X-Series, M17, or M18 slide with a Romeo1 Pro or DPP factory cut who want to mount a Trijicon RMR, SRO, or compatible Holosun optic without sending the slide out for milling. The plate bridges the Romeo1 Pro footprint already present in those slides to the smaller RMR/SRO footprint, so the conversion is reversible and leaves the original slide cut intact.

Included with the plate is a 10-8 Performance rear sight, which means your iron sight co-witness is already solved at the time of installation rather than requiring a separate sight purchase and height calculation afterward. The Romeo1 Pro cut sits deeper in the slide than a standard RMR cut, and this plate accounts for that geometry so the mounted optic ends up at the correct height relative to the bore.

C&H Precision machines these plates on HAAS CNC equipment and runs each one through multiple inspection steps before it ships. All mounting hardware is replaceable individually, so a stripped or lost screw does not require replacing the plate itself. The plate is made in the USA. Before completing installation, C&H recommends dry-fitting all components first, since tolerance stacking between the slide, plate, and optic can vary unit to unit — their customer service team can help diagnose any fitment issues that come up during that process.