C&H PLT FOR GLK MOS TO HOLO 407K

Description

The C&H Precision GL-HOLOK adapter plate solves a specific problem: the Glock MOS footprint does not match the Holosun 407K or 507K mounting pattern, so without a bridge plate, those optics simply cannot be used on that pistol. This plate fills that gap, letting you run a 407K or 507K on a full-size or duty-framed Glock MOS without sending the slide out for milling.

The plate body is machined from 6061 aluminum and finished in MIL-SPEC Type III hard anodizing, which puts a hard, wear-resistant oxide layer directly into the surface of the metal rather than sitting on top of it. That matters on a carry or duty pistol where the slide area around the optic sees regular contact. The mounting hardware is stainless steel throughout, and the T-nuts are machined from 416 stainless steel — a grade chosen for its strength and corrosion resistance in a fastener application where you want reliable thread engagement without galling.

The plate is compatible with the Glock MOS variants covering the G17, G19, G20, G21, G22, G23, G34, G35, G40, G41, G45, and G47. It does not fit the G43X or G48, which use a different, smaller MOS cut. If you are running a G43X or G48, this is not the right plate. The package includes the optic plate itself, three M3 x 6mm flat-head screws for attaching the plate to the slide, three optic mounting screws for securing the 407K or 507K, and three 416 stainless T-nuts. C&H recommends dry-fitting all components before final installation, since tight manufacturing tolerances across the plate, optic, and slide can interact in ways that need to be confirmed before torquing anything down.