The FN 509 Compact MRD pistol in 9mm with a Flat Dark Earth finish (brand part no. FN 66-100574) trims the 509 platform further into a compact frame for concealed carry while retaining the mini red dot optics mounting system. FN America builds the pistol with a 3.7-inch cold hammer forged barrel and blackout iron sights, and interchangeable Flat Dark Earth backstraps tailor the grip to hand size. The trigger runs with no manual safety, and one 12-round and one 15-round magazine ship with the pistol alongside an FN soft case. Among optic-ready semi-auto handguns, this 509 Compact configuration favors concealed carriers who want red-dot compatibility.

Key Specifications

• The chambering is 9mm.
• The capacity is 12+1 rounds (15-round magazine also included).
• The barrel measures 3.7 inches and is cold hammer forged.
• The slide is optic ready and serrated, with blackout iron sights.
• The safety is ambidextrous, with no manual safety lever.
• The grips are Flat Dark Earth interchangeable backstraps.
• One 12-round and one 15-round magazine ship with the pistol, plus an FN soft case.
• The rifling twist rate is 1:10-inch RH.
• The barrel finish is Black.

Frequently Asked Questions

What magazines does this pistol include? One 12-round and one 15-round magazine, plus an FN soft case.

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

Buy the FN 509 Compact MRD Pistol, FDE

A concealable compact frame with red-dot compatibility is exactly what this 509 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.