FN 509M Midsize Tactical 9mm FDE | 4.5in | 66100745

The FN 509M Midsize Tactical is an optics-ready, midsize striker-fired pistol built around a 4.5-inch threaded barrel and a Flat Dark Earth polymer frame. It ships with two magazines and an FN soft case; the slide is cut for low-profile micro red dots and fitted with suppressor-height three-dot night sights. For a reliable micro red dot under $1,000 that pairs well with the FN Low-Profile Optics-Mounting System, consider a Trijicon RMR or a Holosun 507-series unit.

Product Specifications

• The UPC is 845737011604.
• The manufacturer is FN America / FN Herstal.
• The model is listed as FN509M.
• The caliber is 9mm.
• The action is Semi-Auto.
• The barrel measures 4.5 inches and is threaded.
• The barrel type is threaded with a 1/2×28 thread pattern.
• The optic footprint is listed as multiple and uses FN’s low-profile optics mounting system.
• The slide is described as optic cut and serrated to accept most micro red dots.
• The sights are suppressor-height 3-dot night sights.
• The frame material is polymer.
• The finish is Flat Dark Earth with an applied PVD finish on slide/frame components.
• The package includes two magazines and an FN soft pistol case.
• The firearm incorporates fully ambidextrous controls.
• The product is described as part of the Midsize Tactical series.

The FN 509M Midsize Tactical is designed for shooters who want a capable, optics-ready midsize pistol for everyday carry and duty or range training. Its threaded barrel and suppressor-height sights make it suitable for users planning to run a host of muzzle devices or suppressor setups, while the optics cut and robust slide finish support fast target acquisition with micro red dots. The pistol’s ergonomics and interchangeable backstraps help it fit a wide range of hands, and the included soft case and magazines make it ready for immediate use on the range.

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