FN 509M T 9mm 4.5in | Holosun 407C | 66101937

The FN 509M Tactical is a midsize, optics-ready semi-automatic pistol configured for practical accuracy and modular carry. It features a 4.5-inch cold hammer-forged barrel with 1/2×28 muzzle threading and ships with a Holosun 407C red-dot sight installed. This package is suited to everyday carry in jurisdictions that allow it and for precision-oriented range training where a compact, threaded-barrel pistol is desired.

Product Specifications

• The manufacturer is FN America / FN Herstal.
• The model is FN 509M Tactical (ATF Model 509).
• The caliber is 9mm Luger.
• The barrel length is 4.5 inches.
• The action is Semi-Auto.
• The slide is steel, optic-ready with serrations.
• The frame material is polymer.
• The finish is black.
• The muzzle is threaded to 1/2×28.
• The package includes Holosun 407C red-dot sight.
• The backup sights are suppressor-height 3-dot night sights.
• The package includes two magazines.
• The overall length is 7.9 inches.
• The weight is 27.9 ounces.
• The UPC is 845737018412.

This configuration brings a practical, threaded midsize platform to shooters who want a compact duty-style pistol with optics and accessory capability. The combination of an optic-ready steel slide, threaded barrel, and factory red dot makes it straightforward to set up for precision-focused range work or daily carry where legal; the included Holosun 407C provides a low-profile sighting solution out of the box. The 509M Tactical balances modern features with a predictable control layout and rugged construction.