FN America FNX-45 Tactical .45 ACP FDE - DA/SA, 5.3 in Threaded Barrel (.578x28), Optics-Ready Slide, Night Sights, 15+1
The FNX-45 Tactical is a full-size, hammer-fired .45 ACP built for versatility and durability. It features a 5.3-inch cold hammer-forged stainless barrel with .578x28 RH threads, an FDE stainless slide and polymer frame, and suppressor-height night sights. The optics-ready slide includes factory adapter plates, and fully ambidextrous controls support left- or right-handed use. Made in the USA and supplied with two 15-round magazines, this example stands out for its feature set and clean overall condition.
The slide is finished in FDE with front and rear serrations and a cover plate over the optics cut. The frame is FDE polymer with molded checkering and interchangeable backstraps to tailor grip size. A MIL-STD-1913 rail on the dustcover accepts compatible lights or accessories.
The DA/SA trigger system and external skeletonized hammer provide both double-action and crisp single-action operation. Safety and decocker functions are combined in ambidextrous levers. The ambidextrous slide stop and magazine release complete the control layout.
The cold hammer-forged stainless barrel and stainless slide prioritize longevity, while the suppressor-height night sights offer a clear sight picture. The double-stack 15-round magazines include numbered witness holes, and the baseplates are polymer.
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 Notes: Minor superficial scratches and blemishes are present from prior handling. The bore is clean and shiny.
What’s Included
- 2x 15-round magazines
- Factory optics-mounting adapter plates with screws
- Interchangeable backstraps (additional backstraps pictured)
- FN-branded soft pistol case
- Owner's manual
This FNX-45 Tactical combines an FDE stainless slide and FDE polymer frame with fully ambidextrous controls, making it adaptable for a wide range of users. The optics-ready slide with included adapter plates streamlines mounting most popular micro red dots. When an optic is not installed, the cover plate maintains a clean profile.
The 5.3-inch cold hammer-forged stainless barrel is threaded .578x28 RH, pairing naturally with the included suppressor-height night sights for a clear view. The front and rear night sights provide low-light capability.
The DA/SA, recoil-operated system with an external skeletonized hammer offers a familiar manual of arms. An ambidextrous manual safety/decocker, ambidextrous slide stop, and ambidextrous magazine release ensure the pistol is fully configurable for either hand.
Capacity is 15+1 rounds of .45 ACP, fed by steel double-stack magazines with numbered witness holes. A MIL-STD-1913 rail on the dustcover supports accessory mounting, and interchangeable backstraps with molded checkering allow grip customization.




