The FN 509 Tactical, an extension of the FN 509 family, is based on FN's submission pistol that the U.S. Army tested for its Modular Handgun Trials, but includes the significant improvements to the design that were implemented in the FN 509. The pistol features the company's patent-pending Low-Profile Optics Mounting System that enables the platform to accept more than ten commercially-available miniature red dot (MRD) optics that co-witness with the suppressor-height night sights and remain adaptable to future optics releases with no requirement of direct milling of the slide. The slide cap, for use when not shooting with an optic, has raised sight wings that protect iron sight alignment if the pistol is dropped or jostled, and provides a textured ramp for racking the slide against a belt loop, pant pocket or boot. An FN-signature 4.5-inch, cold hammer-forged, stainless-steel barrel with target crown, 1/2" x 28 threads that accept the bulk of 9mm suppressors available and thread cap with integrated O-ring to prevent loosening during use complete the top end. Lastly, the 24-round magazines, nearly identical in length to the pistol's slide, maximize ammunition capacity without impacting carry convenience. Brand FN Series Tactical Model 509 Caliber 9mm Luger Capacity 24+1 Action DAO Frame Finish Matte Black OAL 7.90" Frame Material Polymer Hand Right Hand Sight Style Night Slide Finish Matte Black Slide Material Stainless Steel Slide Description Optic Ready / Serrated Grips Black Textured w / Interchangeable Backstrap Sight Configuration 3-Dot Night / Suppressor Height Includes 2 Magazines / Optic Mounting System Safety Loaded Chamber Indicator Barrel Description Steel Threaded Barrel Length 4.50" Max Capacity 17 Weight 27.90 oz