C&H Precision FN 509®, FN510®, FN545® V4 MIL/LEO Plate For Holosun 407K-507K FN509-HOLOK

The C & H Precision FN 509, FN 510, and FN 545 V4 MIL/LEO Plate is a premium, 1x unmagnified conversion adapter engineered to mount sub-compact red dot sights onto factory optics-ready FN handgun slides. CNC-machined from lightweight 6061-T6 aluminum with a black MIL-SPEC Type III hard-coat anodized finish, this low-profile plate maintains a slim deck height under 0.10 inches. It adapts the proprietary slide cut layout into a secure interface tailored specifically for the Holosun K-series footprint, providing native compatibility with the 407K, 507K, EPS, and EPS Carry models. To prevent screw stripping under heavy recoil, the design incorporates patented 416 stainless steel T-nuts that deliver six to seven threads of maximum engagement. Operating entirely without batteries or internal electronics, this durable American-made hardware solution arrives pre-bundled with stainless steel mounting screws and features full coverage under the signature C & H Precision Lifetime Warranty.