Red Dot Adapter Plate for FN 509/510/545 Compatible with Holosun 509T

Optics Cut Compatibility: Fits FN 509 series, FN 510, and FN 545 optic-ready slides, Not compatible with FN 502 or FN Reflex. Optic Compatibility: Compatible with Holosun 509T dot sight. Easy And Convenient Installation: Please slide the plate into the corresponding slot at a slight angle. This ensures full contact surface engagement and enhances the overall stability of the installation. Material: Precision-machined aerospace-grade 7075 aluminum Finish: Type III hard anodized finish. Package includes: Includes mounting hardware for quick and secure installation. Tips: Use appropriate torque and thread locker per optic manufacturer's recommendations. Check screw length to ensure a secure installation.