Fn 509 Mrd 9mm Luger 4.50 in 17+1 Capacity Polymer Frame

The FN 509 MRD builds on FN's duty-proven 509 series to deliver a modern, carry-capable striker-fired 9mm Luger with a compact 4.50" cold-hammer forged barrel and a full-size grip that yields controllable recoil and ample capacity at 17+1 for home defense, duty, and range work. This MRD bundle arrives factory cut for optics and fitted with a Holosun 407C red dot, and FN's Low Profile Optics Mounting System plus sights cut to co-witness for fast target acquisition and consistent sight picture under stress. Features like an ambidextrous slide stop, loaded chamber indicator, aggressive front and rear serrations, interchangeable backstraps, and a rugged black polymer frame make the pistol adaptable for right- or left-handed shooters and harsh environments, while the recessed target crown on the barrel supports tight groups for defensive precision. With no manual safety and a DAO-style striker action this handgun emphasizes immediate, intuitive operation for legally armed citizens and professionals who demand a reliable semi-auto pistol for daily carry, duty, or range training.