The FN 509 Tactical is a semiautomatic 9mm pistol developed from FN's U.S. Army Modular Handgun Trials submission and refined for duty, defensive, and suppressor-ready use. This FDE/Tan model features a 4.5-inch threaded barrel, suppressor-height night sights, and FN's Low-Profile Optics Mounting System, which supports a broad range of miniature red dot optics without requiring direct slide milling. An ambidextrous manual safety, ambidextrous magazine release, and ambidextrous slide stop lever provide flexible controls, while the polymer frame offers a durable and practical foundation. The package includes one 17-round magazine, one 24-round magazine, and an FN soft case.

Key features

• 4.5-inch threaded barrel with 1/2x28 thread specification for suppressors and compatible muzzle devices
• FN Low-Profile Optics Mounting System accepts numerous miniature red dot optics and supports co-witnessing with the factory night sights
• Suppressor-height night sights provide an elevated sighting plane for use with the threaded barrel
• Ambidextrous manual safety, magazine release, and slide stop lever accommodate left- and right-handed operation
• Includes one 17-round magazine, one 24-round magazine, and an FN soft case
• Polymer frame and 27.9-ounce weight balance durability with practical carry and handling

The FN 509 Tactical combines optics-ready capability, suppressor-ready features, and ambidextrous controls in a versatile 9mm platform.