C&H PLT STACCATO DUO TO 407K/507K

Description

The C&H Precision Staccato Duo adapter plate is built for Staccato pistol owners who want to run a Holosun 407K or 507K without sending their slide out for milling. It bridges the gap between the Staccato Duo slide cut and the footprint those compact Holosun optics require, letting you mount a red dot and get back to the range without permanent modifications to the slide.

C&H Precision designs and machines these plates at their facility in coastal Georgia, using HAAS CNC equipment. A key structural detail is the stainless steel T-nut system built into the plate: rather than threading directly into aluminum, the optic screws engage a steel insert, which gives you substantially more thread engagement than a soft-metal tapped hole would provide. That matters during sustained use, where repeated recoil cycles can work mounting hardware loose over time. Because the hardware is replaceable independently of the plate, damaged screws do not require replacing the entire assembly.

Compatibility covers the Staccato C, C2, CS, Duo, P, XC, and XL. On the optic side, the plate accommodates the Holosun 407K and 507K. Iron sight co-witness is possible with this setup, though the correct sight height depends on your specific combination of slide, plate, and optic — C&H recommends verifying that before purchasing sights. As with any adapter plate installation, dry-fitting all components before final torque is the right practice, since tolerances across slides, optics, and plates can vary and catching a fit issue before full assembly prevents damage to any of the parts involved.