FN 509 Compact MRD 9mm FDE, 3.7 in Cold Hammer-Forged Barrel, Optics-Ready, 15+1 Capacity
This FN 509 Compact MRD stands out with its Flat Dark Earth slide and frame, 3.7 in cold hammer-forged stainless-steel barrel, and FN’s Low-Profile Optics-Mounting System on an optics-ready slide with the MRD cover plate installed. Raised blackout steel iron sights are designed to co-witness with mounted optics. Ambidextrous controls, aggressive grip texturing with interchangeable backstraps, and a proven lineage from FN’s MHS program complete a compact, duty-focused 9mm package. It includes one 15-round and one 12-round magazine.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal markings from previous handling and use. The bore is bright and clean.
What’s Included
- FN-branded soft zip pistol case
- 1x 15-round factory FN 509 steel double-stack magazine
- 1x 12-round factory FN 509 steel double-stack magazine
The 509 Compact MRD is built around a striker-fired, short-recoil, locked-breech action and a 3.7 in cold hammer-forged stainless-steel barrel. Its compact size balances concealability with control, and the polymer frame in Flat Dark Earth features aggressive texturing and interchangeable backstraps for a secure, adaptable grip.
The slide is optics-ready and uses FN’s Low-Profile Optics-Mounting System (MRD), with the cover plate installed. Raised blackout steel iron sights provide a crisp sight picture and are designed to co-witness with mounted optics.
Controls are fully ambidextrous, including the magazine release and slide-stop levers, supporting both right- and left-handed use. A MIL-STD-1913 accessory rail with three slots allows direct mounting of compatible lights or other accessories.
Capacity is up to 15+1 rounds of 9mm Luger, and this pistol includes both 15- and 12-round factory magazines. The platform’s development traces to FN’s MHS program, with over 1,000,000 test rounds, and it is manufactured in the USA.