The FN 509 MRD joins the ranks packing a full-size punch in a compact, optics-ready package. The patented FN Low-Profile Optics Mounting System with plate adapters for direct mounting of more than 10 optics and features black co-witness iron sights. Features improved controls; improved texturing; flat faced trigger; fully ambidextrous; front and rear cocking serration on the slide and MIL-STD-1913 accessory rail. Includes two interchangeable backstraps, two magazines, locking device, owners manual and soft pistol case.