The FNX-45 Tactical is a full-size DA/SA pistol chambered in .45 ACP. It builds on the FNP-45 Tactical platform with a cold hammer-forged stainless steel barrel, raised Trijicon 3-dot night sights, a Picatinny accessory rail, and a threaded barrel for suppressor or muzzle device attachment. 
 

Key Specifications 

• Brand: FN 
• Model: FNX-45 Tactical 
• Caliber: .45 ACP 
• Action: DA/SA (Double Action/Single Action) 
• Capacity: 10+1 rounds 
• Barrel Length: 5.3 inches 
• Weight: 33.3 oz (2.1 lbs) 
• Sights: Trijicon 3-Dot Night Sights 
• Grip Material: Textured Flat Dark Earth Polymer with Interchangeable Backstraps 
• Safety Features: Ambidextrous Decocker and Manual Safety 
• Finish: Flat Dark Earth on Slide and Frame 
   

Detailed Features 

 
The 5.3-inch cold hammer-forged stainless barrel is threaded for suppressors or compensators. Raised Trijicon night sights sit high enough to co-witness with most suppressors. The polymer frame has replaceable steel rails for long-term durability, and the Picatinny rail accepts lights and lasers securely. Three interchangeable backstraps let shooters fit the grip to their hand size. Ambidextrous controls work equally well for left- and right-handed users. 
 

Usage Scenarios 

• Personal Protection: Night sights and the DA/SA trigger give a usable first-shot option in low-light situations. 
• Range Use: The 5.3-inch barrel and balanced feel work well for target practice. 
• Competitive Shooting: Accuracy at range and low perceived recoil suit formats that reward precision. 
• Duty/Law Enforcement: The threaded barrel, rail, and ambidextrous controls match common duty requirements.

The FNX-45 Tactical generates largely positive feedback across firearm forums, with reliability and accuracy as the most consistently praised traits. The polymer frame with steel rails gives it a solid feel without excessive weight, and the Trijicon night sights get good marks for low-light use.

Accuracy comments are strong, particularly at distances where most full-size handguns start showing inconsistencies. The night sights and Picatinny rail add practical value that most owners make use of.

Ergonomics rate well for most hand sizes, though some users with smaller hands note the grip width is noticeable. The .45 ACP caliber itself draws the usual discussion: stopping power advocates like it, and those focused on recoil management sometimes prefer a 9mm alternative.

Size and weight are the main drawbacks for those considering it as a carry gun. At 33.3 oz unloaded, it sits toward the heavy end for daily carry, which polarizes opinions depending on intended use.

Price sits above midrange, and some buyers feel that a comparable shooting experience is available for less money. Customization options are reasonable, with a good supply of aftermarket parts available for the platform.