FN 509 Tactical 9mm, FDE, 4.5 in Threaded Barrel, Vortex Viper Red Dot, 24+1 Capacity
The FN 509 Tactical stands out with its FDE finish, LPOMS optics cut, and an installed Vortex Viper red dot. It features a 4.5 in stainless, cold hammer-forged threaded barrel with a recessed crown, fully ambidextrous controls, and a MIL-STD-1913 accessory rail. This full-size 9mm includes both 24- and 17-round magazines and retains the 509 family lineage developed from FN's MHS program.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Details: This firearm is in great shape. There are some minor scratches and blemishes present. The bore is clean and shiny.
What’s Included
- Optic: Vortex Viper red dot (installed)
- Optic Cover Plate: FN 509 LPOMS slide cover plate (FDE)
- Backstrap: Interchangeable backstrap (spare)
- Case: FN soft zip pistol case (FDE)
- Magazine: Extended-length magazine
- Magazine: Standard-length magazine
Built as the Tactical variant of the FN 509 series, this pistol pairs a Flat Dark Earth slide and frame with fully ambidextrous controls, including the slide stop and magazine release. A MIL-STD-1913 accessory rail on the dustcover supports light or laser attachment. The frame is marked "FN COLUMBIA, SC USA."
The 4.5 in stainless steel barrel is cold hammer-forged and threaded 1/2x28 with an O-ring-retained thread cap. A recessed crown and 1:10 RH twist support precise performance with a variety of 9mm loads.
The slide incorporates FN's Low-Profile Optics Mounting System (LPOMS) and comes topped with a Vortex Viper red dot. Suppressor-height iron sights (front post, rear notch) provide a clear co-witness. Please note: while the OEM optic cover plate is included, the lug adapter required for proper reinstalment of the cover plate is not present.
This full-size 9mm offers a maximum capacity of 24+1 with the included extended magazine and 17+1 with the standard magazine. Interchangeable backstraps fine-tune grip fit. Dimensions include a 7.9 in overall length, 5.75 in height, 1.35 in width, a 5.79 in sight radius, and a weight of 27.9 oz.




