The FN 509 Tactical is a striker-fired 9mm pistol designed for adaptable duty, defensive, and suppressor-ready use. Its 4.5-inch cold hammer-forged stainless-steel barrel features a recessed target crown, polished chamber and feed ramp, and 1/2x28 threads with an O-ring-equipped thread cap. The FN Low-Profile Optics Mounting System accepts a wide range of miniature red dot optics without direct slide milling, while suppressor-height night sights support co-witnessing. A sight-protecting slide cap, enhanced polymer grip texture, interchangeable backstraps, and a MIL-STD-1913 accessory rail add practical versatility. Fully ambidextrous slide stop and magazine release controls support operation from either side.

Key features

• Optics-ready slide with the FN Low-Profile Optics Mounting System for broad miniature red dot compatibility
• 4.5-inch cold hammer-forged stainless-steel barrel with a recessed target crown
• 1/2x28 threaded barrel with an O-ring-retained thread cap for suppressor use
• Suppressor-height night sights designed to co-witness with mounted optics
• Enhanced polymer grip texture and interchangeable backstraps for a secure, personalized hold
• Fully ambidextrous slide stop lever and magazine release for left- or right-handed operation

The FN 509 Tactical combines optics compatibility, suppressor-ready features, and adaptable ergonomics in a duty-oriented 9mm pistol.