FN 509 Fullsize MRD 9mm Luger, 4.5 in Barrel, Optics-Ready, 17+1, Black, Made in USA
This FN 509 Fullsize MRD stands out as a recent 2024 introduction with a 4.5 in non-threaded barrel, an optic-cut slide using FN's Low-Profile Optics-Mounting System, and fully ambidextrous controls. It is chambered in 9mm Luger with a 17+1 capacity and is marked FN Columbia, SC USA.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The exterior shows a few minor, superficial scratches and small blemishes. The bore presents a reflective interior.
What's Included
- 2x 17-round steel double-stack magazines
- FN-branded zippered soft pistol pouch
- Factory FN cardboard box with matching serial label
- Manual
The full-size 4.5 in configuration provides a longer sight radius and a non-threaded barrel and slide assembly, finished in black. The polymer frame is finished in black and features aggressive texturing with FN medallion panels and front strap relief cuts for a firm, consistent grip.
The slide is optic-cut and ships with a cover plate, integrating FN's Low-Profile Optics-Mounting System for mounting compatible micro red dots. Raised iron sights are installed, and the front sight uses a white dot. Front and rear cocking serrations aid slide manipulation.
The striker-fired, locked-breech, tilting-barrel action is paired with fully ambidextrous controls, including the slide stop and magazine release. A MIL-STD-1913 accessory rail with three slots is molded into the dust cover for light or laser attachment.
Standard capacity is 17+1, and this pistol includes two 17-round steel double-stack magazines. Factory markings include 509, 9x19, and FN COLUMBIA, SC USA, reflecting its U.S. manufacture. The model was introduced by FN in 2024.