Used FN FNX-45 Tactical 45ACP Optics-Ready 5.3" FNX45 +3 MAGS & ORIG CASE

FN FNX-45 45ACP FNX45 DA/SA

How Buying WorksEnding October 20, 2026 at 10:00 PM

Key Features

  • Item Type: Semi Auto Pistols
  • Action: DA/SA
  • Manufacturer: FN America (FN)
  • Capacity: 20 1
  • Model: FNX-45
  • Barrel Length: 5.3"
  • Caliber: .45 ACP
  • Finish: Black
  • Overall Condition: Very Good

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Product Description

    FN FNX-45 Tactical .45 ACP, Black, DA/SA, Threaded 5.3 in Barrel, Optics-Ready, Ambidextrous Controls, 3 Magazines, Case

    The FNX-45 Tactical stands out as a full-size .45 ACP with a DA/SA, hammer-fired system, fully ambidextrous controls, and a factory optics-ready slide. It features a 5.3 in cold hammer-forged, stainless steel threaded barrel, suppressor-height 3-dot sights, and comes with three magazines including a 20-round extended option. This example is USA-made and arrives with FN's tan soft case, spare backstraps, and one optics mounting plate.

    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: There are minor, superficial scratches and blemishes on exterior surfaces. The optic cover plate is not included.

    What's Included
    • FN-branded tan soft pistol case
    • Manual
    • Set of interchangeable spare backstraps
    • One optics mounting plate for the factory slide cut
    • One 20-round magazine and two 15-round magazines

    The 5.3 in cold hammer-forged stainless steel barrel is extended and threaded .578x28 TPI, making it ready for common .45 ACP muzzle devices. A 1:16 RH twist supports typical .45 ACP loads, and suppressor-height 3-dot iron sights provide a clear sight picture over mounted devices.

    The slide is finished in black and includes front and rear serrations, an external extractor, and a factory optics cut. One mounting plate is included for the slide cut, offering immediate compatibility with supported optics systems.

    The polymer frame is finished in black and includes a MIL-STD-1913 accessory rail on the dustcover. Fully ambidextrous controls include the safety/decocker, slide stop, and magazine release. Interchangeable backstraps allow the grip to be tailored to the shooter.

    This DA/SA, hammer-fired pistol uses an external, looped-spur hammer and includes three magazines: one 20-round extended magazine and two 15-round magazines. With the extended magazine, capacity is 20+1. The pistol is made in the USA.

Specifications

Item TypeSemi Auto Pistols
ManufacturerFN America (FN)
ModelFNX-45
SubmodelTactical
Caliber.45 ACP
Overall ConditionVery Good
Bore ConditionExcellent
ActionDA/SA
Capacity20 1
Barrel Length5.3"
FinishBlack
Stock/Gripsinterchangeable backstraps
Sight/Opticsuppressor-height 3-dot iron sights
What's IncludedManual
Country of OriginUnited States