C&H PLT SA PRODIGY TO HOLO 509T W/RS

Description

The C&H Precision adapter plate is designed for Springfield Armory Prodigy owners who want to mount a Holosun 509T without committing to permanent slide milling. If your Prodigy already has the AOS (Agency Optic System) cut from the factory, this plate drops directly into that footprint and gives the 509T a stable, repeatable seating point that returns to zero if removed and reinstalled.

The plate is machined from mild steel rather than aluminum, which matters here because the 509T is a larger, heavier optic and a steel substrate resists the cumulative deformation at the mounting screw bosses that can develop under recoil over time. The Electro Deposition paint finish bonds to the steel at the molecular level rather than sitting on top of it, giving it better edge coverage in the recesses and corners where corrosion typically starts on machined parts.

This particular variant includes an integrated rear sight, which solves a real problem: mounting a full-size optic like the 509T often raises the sight line above your existing factory rear blade, making it useless for co-witnessing or as a backup. The built-in rear sight is already set at the correct height for the plate-and-optic stack, so you are not sourcing a separately cut sight and guessing at the geometry. Note that this plate is not compatible with the Holosun HE509-RD ACSS Vulcan, which shares the same footprint but differs in screw pattern. Hardware included covers all three mounting positions, and C&H recommends dry-fitting before final torque to account for tolerance variation between individual slides and optics.