FN 509 Midsize Tactical 9mm Luger 4.5" 10+1 Semi-Auto Pistol

The FN 509 Midsize Tactical is a striker-fired 9mm Luger service pistol built around FN's combat-proven polymer-frame platform. This mid-size tactical configuration pairs a duty-length 4.5" threaded barrel with a full-hand grip frame and FN's signature low-profile optics-mounting slide, making it a versatile choice for duty, home defense, and tactical applications.

Chambered in 9mm Luger and fed through 10-round detachable magazines, the 509 Midsize Tactical offers a 10+1 capacity and ships with two 10-round magazines in the box. The slide is optic ready with FN's Low-Profile Optics Mounting System for direct mounting of popular micro red dots, and the factory 3-Dot Night/Suppressor Height sights co-witness through most installed optics.

The polymer frame is finished in matte black and is fitted with FN's interchangeable backstrap system for fit customization. The matching black slide carries front and rear serrations for confident manipulation, and the threaded barrel accepts standard 1/2x28 muzzle devices or sound suppressors. The pistol is configured with no external manual safety and uses a striker-fired trigger for a consistent, combat-oriented pull.

Designed and manufactured by FN America in the United States, the 509 Midsize Tactical brings the company's modern duty-pistol experience to a mid-size, accessory-ready handgun.

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