FN 509 Tactical 9mm Luger Full-Size, 4.5 in Threaded Barrel, PMM Duty Compensator, Optics-Cut Slide, Black, Includes 24- and 17-Round Magazines
This FN 509 Tactical stands out with a factory 4.5-inch cold hammer-forged stainless steel threaded barrel and an installed PMM Duty Compensator. The slide is optics-cut and includes FN's Low-Profile Optics Mounting System plates, paired with suppressor-height iron sights for clear sighting over muzzle devices. Built in the USA, this full-size 9mm includes both a 24-round and a 17-round magazine.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in excellent condition. There are some very minor and superficial scratches and blemishes present. The bore is bright and clean.
What’s Included
- FN-branded soft pistol case
- FN 509 Series manual
- FN Low-Profile Optics Mounting System plates and hardware
- Factory tools for optics mounting
- FN 509 interchangeable backstrap (spare)
- Parker Mountain Machine (PMM) Duty Compensator (installed)
- 1x 24-round magazine
- 1x 17-round magazine
Derived from FN's XM17 MHS submission, the 509 Tactical was released in 2018 and validated by a one-million-round development program. This example is U.S.-made at FN America in Columbia, South Carolina.
The 4.5-inch barrel is stainless steel, cold hammer-forged, and threaded 1/2x28 with an extended length and recessed target crown. A Parker Mountain Machine Duty Compensator is installed, leveraging the factory threaded barrel.
The slide features front and rear cocking serrations, an external extractor, and an optics cut with a cover plate. Suppressor-height iron sights include a tall front post and a square-notch rear with protective ears, with additional protective sight wings on the slide.
The polymer frame in black uses aggressive multi-directional texturing and interchangeable backstraps; a spare backstrap is included. An ambidextrous magazine release and a 4-slot MIL-STD-1913 accessory rail support versatile setup and handling.
This full-size 9mm ships with both a 24-round and a 17-round magazine for flexible capacity. The striker-fired system uses a trigger safety, and the package includes FN's Low-Profile Optics Mounting System plates and hardware for mounting a compatible optic.




