Fn 509M Mrd Midsize, 9mm Luger, 4" Barrel, 15+1, Matte Black/Stainless

The FN 509 Midsize MRD is a carry-ready semi-auto pistol from FN that blends duty-grade durability with everyday concealed carry practicality, offering a 9mm Luger chambering, 15+1 capacity, and a 4" recessed crown barrel for reliable accuracy; the optic-ready/serrated stainless steel slide uses the FN Low Profile Optics Mounting System to accept more than ten miniature red dot sights for fast target acquisition while co-witness combat iron sights provide a dependable backup. Designed around a matte black polymer frame with a Picatinny rail and interchangeable backstraps, the midsize FN 509 frame keeps weight at 26.5 oz and balances concealability with controllability, aided by improved texturing and a flatter-faced trigger for a smoother pull and cleaner break under stress. Ambidextrous controls and a double-action-only action make manipulation intuitive for right- or left-handed shooters, and the MRD accepts larger capacity FN 509 magazines with a sleeve for those who want extended reach. Ideal for EDC, concealed carry, home defense, and range use, this FN handgun requires an FFL transfer and represents the FN 509 series� emphasis on modular optics readiness, ergonomic control, and practical defensive performance.