The FN 510 Tactical in black is a full-size DAO semi-automatic pistol chambered in 10mm AUTO with a 4.71-inch cold hammer-forged barrel. The optics-ready slide accepts common red dot footprints without gunsmithing. 
 

Key Specifications 

• Brand: FN 
• Model Name: 510 Tactical 
• Caliber: 10mm AUTO 
• Action Type: Double Action Only (DAO) 
• Capacity: 10+1 rounds 
• Barrel Length: 4.71 inches 
• Overall Length: 8.3 inches 
• Weight: 2 lbs (32 oz) 
• Finish Color: Black 
   

Features 

The low-profile optics mounting system integrates into the slide and fits most popular red dot footprints. The precision-tuned trigger has a clean break. The cold hammer-forged barrel with target crown supports consistent long-term accuracy. Tritium dovetail sights are fitted for low-light use independent of any mounted optic. 
 
The grip frame design gives control during firing and fits most hand sizes without modification. 
 

Use Cases 

The 10mm AUTO chambering in a full-size platform with a 4.71-inch barrel offers more velocity than shorter-barreled options. The black finish and 8.3-inch overall length suit range use, duty carry, and home defense. The optics-ready slide makes it straightforward to mount a red dot for competition or precision use.

The FN 510 Tactical in black 10mm DAO gets broadly positive feedback, with reliability and optics integration as the two strongest talking points.

Reliability with 10mm is consistently mentioned. Owners report feeding and function across multiple ammunition types, including heavier hunting loads. The 10mm's stopping power is a specific draw for shooters who want more than standard 9mm performance.

The grip ergonomics get good marks. The design accommodates different hand sizes, and the controls are described as intuitive. Ambidextrous features make it accessible to left-handed shooters without modification.

The optics-ready slide draws dedicated attention from shooters who run red dots for competition or tactical training. The ability to mount optics without a gunsmith is a practical advantage that owners value.

The DAO trigger receives split opinions. Shooters who come from single-action or striker-fired pistols sometimes need time to adjust to the feel; those who come from DAO revolvers or prefer a longer pull find it natural.

Size and weight come up regularly. The 32-oz weight and 8.3-inch overall length make it a poor choice for concealed carry but well-suited for duty use, range work, or as a nightstand gun.

Pricing is flagged as a consideration. The FN 510 is priced above some competing 10mm options, though most owners consider the build quality and optics system worth the cost.

Customer service interactions with FN are generally described as satisfactory when issues arise.