FN 509M Tactical 9mm 4.5-inch Threaded Barrel FDE

The FN 509M Tactical is a midsize, optics- and suppressor-ready pistol configured for versatile duty, home defense, and range use. This Flat Dark Earth bundle includes a 4.5-inch threaded barrel and a set of magazines and accessories intended to support both training and daily carry roles. Controls are designed for ambidextrous use and the slide accepts low-profile red dot optics.

Key Specifications

• Chambered in 9mm.
• Barrel is 4.5 inches, 1/2x28 threaded.
• Finish is Flat Dark Earth.
• Frame material is Polymer.
• Ships with five 10-round magazines.
• Features the FN Low-Profile Optics-Mounting System for quick MRD installation.
• Sighted with suppressor-height 3-dot night sights.
• Includes an FN soft case and a locking device.
• Includes two interchangeable backstraps for grip customization.

Factory features such as a threaded barrel, optics mounting system, and included magazines make this FN 509M Tactical bundle a practical choice for shooters who value a compact, adaptable platform. The combination of a midsize footprint and accessory-ready configuration supports a wide range of applications from everyday carry setups to dedicated range sessions.