FN 509M MRD 9mm 4" 15+1 Striker-Fired Semi-Auto Pistol, Matte Black - 66100587

The FN 509 Midsize MRD is a 9mm Luger striker-fired semi-automatic pistol featuring a 4-inch barrel and optic-ready slide with FN's Low Profile Optics Mounting System compatible with 10+ miniature red dot optics. It has a 15+1 round capacity, interchangeable backstraps, ambidextrous controls, fixed co-witness iron sights, and weighs 26.5 oz. The midsized polymer frame with Picatinny rail makes it suitable for concealed carry while remaining compatible with larger FN 509 magazines using a sleeve.