C&H PLT HK VP9 OR TO HOLO 509T

Description

The C&H Precision HK-509T-ST is an optics adapter plate that lets you mount a Holosun 509T directly to an HK VP9 slide without sending the slide out for milling. It fits the HK VP9, HK 2020 VP9, HK VP9 Match, HK VP9 Tactical OR, HK VP9L OR, and HK VP9SK, making it a practical solution for any of those platforms if you want to run a full-shroud optic without permanently altering the slide.

The plate is machined from mild steel and finished with an Electro Deposition Paint coating in black. Steel construction adds meaningful mass over aluminum alternatives, which can help the plate resist deformation under the repetitive impact of slide cycling, and the EDP finish bonds at the molecular level rather than sitting on top of the surface, giving it better resistance to chipping and undercutting than conventional spray or dip coatings. Each plate is cut on HAAS CNC equipment and goes through multiple quality checks before it ships from C&H Precision’s facility in Coastal Georgia.

Hardware is included: three M4 x 8mm socket-head mounting screws in stainless steel. One important compatibility note directly from the manufacturer — this plate is not compatible with the Holosun HE509-RD ACSS Vulcan variant, so confirm your optic model before ordering. C&H also recommends dry-fitting all components before final installation, since tolerance stack-up across the slide, plate, and optic can occasionally require minor adjustment. Iron sight co-witness height will depend on your specific combination of slide cut, plate, and optic, so factor that in if you plan to run suppressor-height or standard irons alongside the 509T.