The FN 509 Midsize MRD pistol in 9mm with a Flat Dark Earth finish (brand part no. FN 66-100741) trims the full-size 509 down to a midsize frame while keeping the mini red dot optics mounting system, giving shooters a more concealable platform with red-dot compatibility in a distinct FDE finish. FN America builds the pistol with a 4-inch barrel and an optics-ready slide, and the trigger runs with no manual safety and full ambidextrous controls. Two 15-round magazines plus a soft pistol case ship with the pistol. Among optic-ready semi-auto handguns, this 509 Midsize FDE configuration favors carry and duty shooters who want a distinct finish.

Key Specifications

• The chambering is 9mm.
• The capacity is 15 rounds.
• The barrel measures 4 inches.
• The finish is Flat Dark Earth.
• The slide is optic ready and serrated.
• The trigger action is semi-auto with no manual safety.
• The controls are fully ambidextrous, with a loaded chamber indicator.
• Two 15-round magazines and a soft pistol case ship with the pistol.
• The unloaded weight is 26.5 ounces.

Frequently Asked Questions

Does this pistol come optic-ready? Yes, the slide is cut for a mini red dot with a low-profile mounting system.

What comes included with this pistol? Two 15-round magazines and a soft pistol case.

Buy the FN 509 Midsize MRD Pistol, FDE

Higher capacity with a distinct FDE finish and red-dot compatibility is exactly what this 509 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.