The FNX-45 Tactical is a full-size DA/SA semi-automatic pistol in .45 ACP with a threaded barrel, ambidextrous controls, and a factory-installed optic mounting plate. It ships with two 15-round magazines and raised three-dot night sights. 
 

Key Specifications 

• Brand: FN 
• Model: FNX-45 Tactical 
• Caliber: .45 ACP 
• Action: Double/Single Action (DA/SA) 
• Capacity: 10+1 rounds (includes 2 magazines) 
• Barrel Length: 5.3 inches 
• Weight: 33.30 oz (approximately 2.1 lbs) 
• Overall Length (OAL): 8.6 inches 
• Grip Type: Textured Black Interchangeable Backstraps 
• Safety Features: Ambidextrous Safety and Decocker 
• Sight Style: Night sights with raised configuration 
   

Detailed Features 

The cold hammer-forged stainless steel barrel is threaded at .578 x 28 tpi for suppressor or compensator attachment. The raised sights clear standard suppressor bodies without modification. A 6.4-inch sight radius contributes to accuracy at distance. 
 
The interchangeable backstraps let shooters adjust grip circumference for different hand sizes. The polymer frame has a full-length accessory rail. Both safety levers and magazine releases are fully ambidextrous. The decocker drops the hammer safely after chambering, allowing carry in DA mode. 
 
The finish is matte black on the stainless slide and polymer frame. The overall length of 8.6 inches and weight of 33.3 oz make this a duty-size pistol that is not optimized for concealed carry. 
 

Target Audience 

Law enforcement officers looking for a .45 ACP duty pistol with suppressor capability, competitive shooters in open or tactical divisions, and home defense users who prioritize terminal performance over compactness. 
 

Usage Scenarios 

• Suppressed use: threaded barrel and raised sights are factory-configured for can use. 
• Home defense: 15-round .45 ACP capacity is high for the caliber. 
• Duty: ambidextrous controls suit both-handed qualification requirements.

The FNX-45 Tactical draws consistent praise for its build quality and the factory suppressor-ready configuration. Owners appreciate that the raised sights, threaded barrel, and optic mounting plate come standard rather than requiring aftermarket work.

The 15-round .45 ACP magazine capacity gets mentioned frequently as a genuine advantage over competitors like the Springfield TRP or Glock 21, most of which cap out at 10-13 rounds in .45.

The trigger gets mixed comments. The DA first shot requires deliberate pull, which some shooters prefer as a safety margin and others dislike for its inconsistency with subsequent SA shots. People who come from a DA/SA background adjust quickly; those accustomed to striker-fired pistols sometimes take longer.

Weight is the main complaint from shooters considering it for everyday carry. At 33.3 oz unloaded it is heavy even by full-size standards, and the 8.6-inch OAL limits holster options outside of OWB carry. Most owners treat it as a range, duty, or home defense pistol rather than a concealed carry option.

Price is acknowledged as a genuine investment. Shooters who bought it for suppressed use or competition generally feel the tactical feature set justifies the cost. Casual shooters sometimes conclude that a comparable non-threaded pistol at a lower price serves their needs better.