FN FNX-45 Tactical .45 ACP FDE, 5.3 in Threaded Barrel, DA/SA, Suppressor-Height Night Sights, Optics-Cut Slide, 15+1
This FNX-45 Tactical stands out with its .45 ACP capacity of 15+1, a 5.3-inch cold hammer-forged, threaded stainless steel barrel, and an optics-cut Flat Dark Earth slide. It features suppressor-height 3-dot night sights and fully ambidextrous controls. Marked FN Columbia, SC USA on the slide, it comes with two 15-round magazines, optic adapter plates, interchangeable backstraps, and the factory FN-branded soft zippered case.
Condition
Overall Condition: Fair condition, showing extensive signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are markings from prior handling and use. One optic cover plate screw is broken off in the slide and will require a gunsmith to remove. Please refer to the photos.
What's Included
- 2x 15-round steel magazines with witness holes and polymer baseplates
- Optic adapter plates with mounting screws
- Interchangeable backstraps (additional panels)
- FN owner's manual
- Factory FN-branded soft zippered case
The FNX-45 Tactical is a full-size, hammer-fired DA/SA pistol built for .45 ACP with a 15+1 capacity. Its polymer frame and Flat Dark Earth finish pair with fully ambidextrous controls, including the safety/decocker, slide stop, and magazine release, to accommodate a wide range of shooters and setups.
The 5.3-inch stainless steel barrel is cold hammer-forged and threaded .578x28 RH, with a 1:16 RH twist. Suppressor-height fixed 3-dot night sights provide a clear sight picture, with a front blade white dot and a rear sight with two white dots.
The Flat Dark Earth slide is optics-cut for FN's factory mounting system and includes a cover plate. Front and rear cocking serrations aid manipulation, and the external extractor doubles as a loaded chamber indicator.
An accessory rail with multiple Picatinny-style slots supports light or laser attachment. The pistol includes interchangeable backstraps for grip fit, measures 8.64 inches overall, and weighs approximately 33.3 ounces unloaded. The slide is marked FN Columbia, SC USA.




