The FN 510 Tactical in black is a full-size semi-automatic pistol chambered in 10mm with a 4.71-inch threaded barrel and double-action striker-fired action. It ships with both a 15+1 and a 22+1 magazine. 
 

Key Specifications 

• Brand: FN America 
• Model Name: 510 Tactical 
• Caliber: 10mm 
• Action Type: Double Action, Striker Fired 
• Barrel Length: 4.71 inches (120 mm) 
• Overall Length: 8.3 inches (211 mm) 
• Weight: 2 lbs (32 oz) 
• Capacity: 15+1 / 22+1 rounds (two magazines included) 
• Finish: Black 
• Sights: Tritium Lamp Steel Dovetail Sights 
   

Features 

The optics-ready slide accepts most popular footprints without gunsmithing. The trigger breaks at approximately six pounds with a clean reset. The enhanced grip frame reduces felt recoil during rapid fire. The threaded barrel (.578x28) accommodates suppressors or compensators, and two interchangeable backstraps adjust grip size. 
 
The ambidextrous slide stop and magazine release work for left-handed shooters without modification. Tritium sights are standard for low-light performance even without a mounted optic. 
 

Use Cases 

Shipping with both a 15+1 and a 22+1 magazine gives the 510 Tactical flexibility -- the 15-round magazine for a lower-profile setup, the 22-round for maximum capacity at the range or in defensive use. The 10mm chambering works for home defense and as a hunting sidearm where additional power over standard 9mm is needed. The threaded barrel and optics-ready slide cover suppressor and competition use cases.

The FN 510 Tactical in black draws broadly positive feedback with a few consistent caveats.

Build quality and ergonomics are the strongest points. Owners describe the construction as solid and the grip as comfortable across different hand sizes. The ambidextrous controls are praised specifically by left-handed shooters who otherwise have to modify their firearms.

The optics-ready slide is a consistent draw. Red dot mounting without additional machining is practical for competition and tactical use, and users in both communities treat it as a standard expectation for a modern duty pistol.

The threaded barrel gets positive attention from owners running suppressors or who want the option for muzzle devices without modification.

Capacity is a notable strength. Having both 15- and 22-round magazines in the box gives immediate flexibility.

The 10mm caliber generates the usual split opinions on recoil. Experienced shooters describe it as manageable; newer shooters or those unfamiliar with the cartridge note an adjustment period. Some owners specifically chose the platform for the 10mm's performance over 9mm for defensive and hunting applications.

Reliability is consistently positive, though a small number of owners report sensitivity to specific ammunition brands -- a minor note in an otherwise solid track record.

Pricing is the main concern. The FN 510 is priced above comparable 9mm options, which some buyers see as the cost of the 10mm platform and feature set, while others find it harder to justify given the alternatives.