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

About this product

The FN 509 Tactical is a full-size striker-fired pistol built on FN’s proven 509 architecture. It features a 4.5-inch cold hammer-forged stainless steel barrel with 1/2×28 threads and an O-ring retention thread cap, a Flat Dark Earth polymer frame with enhanced grip texture, and suppressor-height night sights. The slide incorporates FN’s Low-Profile Optics Mounting System to accept multiple miniature red dot optics without the need for slide milling. This model ships with one 17-round magazine, one 24-round magazine, and an FN soft pistol case.

Key Specifications

• The caliber is 9mm Luger.
• The barrel measures 4.5 inches and is threaded 1/2×28 for accessories.
• The action is striker-fired / double-action.
• The frame material is polymer.
• The finish and frame color are Flat Dark Earth.
• Included magazines are one 17-round and one 24-round.
• The maximum magazine capacity listed is 24 rounds.
• The unloaded weight is 27.9 ounces.
• The overall length is 7.9 inches.
• The optic footprint accepts multiple miniature red dot footprints via FN’s mounting system.

The FN 509 Tactical blends high-capacity ergonomics with an optics-ready slide and a threaded barrel for accessory flexibility. Its enhanced grip texture, suppressor-height night sights, and included higher-capacity magazine make it well suited for duty, range use, and defensive applications where modularity and dependable function are priorities.

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