Fn 509 Midsize 9mm Luger 4 in 10+1 Matte Finish Polymer Frame Stainless Slide

The FN 509 Midsize brings the combat-tested FN 509 series into a carryable 4-inch package that balances duty-level performance with everyday carry practicality, featuring a matte black polymer frame with an accessory mounting rail and a matte black stainless steel serrated slide for positive manipulation under stress; chambered in 9mm Luger with a 4" recessed target crown barrel and a 10+1 capacity, this midsize pistol delivers the ballistics and sight radius shooters expect from a full-sized pistol while trimming weight to a manageable 26.5 oz for concealed carry, range sessions, or service use. The DAO action and new flatter-faced trigger provide a more controllable trigger press and cleaner break, aided by improved controls and two interchangeable backstraps with aggressive texturing to improve recoil management and grip purchase, and the 3-dot fixed contrast sights give quick target acquisition. Compatible with FN 509 magazines using a sleeve, the 509 Midsize omits a manual safety for a streamlined draw stroke and faster follow-up shots, making it a solid choice for users seeking a rugged, accurate semi-auto pistol for EDC, duty, and training.