FN 509 Tactical 9mm 4.5in Threaded Barrel 17/24rd Mags

About this product

The FN 509 Tactical is a full-size semi-automatic pistol built for duty, range use, and suppressed shooting. It features FN’s Low-Profile Optics Mounting System for compatibility with a wide range of miniature red dot sights and comes with suppressor-height night sights to allow co-witnessing with optics. The pistol’s top end includes a cold hammer-forged stainless steel barrel with a target crown and a 1/2″-28 thread pattern and a polymer frame with interchangeable backstraps for customizable ergonomics.

Key Specifications

• The caliber is 9mm Luger.
• The barrel measures 4.5 inches and is threaded 1/2″-28 for muzzle accessories.
• The action is Semi-Auto.
• The slide is optic-ready with FN Low-Profile Optics Mounting System.
• The sights are suppressor-height night sights that co-witness with compatible optics.
• The frame is black polymer with interchangeable backstraps for fit customization.
• The pistol ships with one 17‑round and one 24‑round magazine.
• The weight is approximately 27.9 oz.
• The overall length is 7.9 inches.
• Included accessories: two interchangeable backstraps and an FN soft case.

Designed for operators and serious shooters who value a durable, optics-capable platform, the FN 509 Tactical balances full-size controllability with features tailored for suppressed and duty use. Robust construction, an optics-ready slide, and the included magazine set make it a practical choice for range training, professional use, and precision follow-up shots in varied conditions.

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