FN Five-seven MRD, BlackDescription With more than two decades of trusted service, the original FN Five seveN breaks new ground in 2022, redefining handgun accuracy standards with new optics ready capabilities, enhanced ergonomics, and improved controls. The FN Five seveN MRDs proprietary optics mounting system consists of a series of plates that match your optic to the slide for a quick and seamless setup simply remove the cover plate, select the compatible optic plate and