The FN 510 Tactical in FDE with 22+1 capacity is a full-size DAO semi-automatic pistol chambered in 10mm AUTO. The 4.71-inch cold hammer-forged barrel is target-crowned, and the slide has a built-in optics mounting system. 
 

Key Specifications 

• Brand: FN 
• Model Name: 510 Tactical 
• Caliber: 10MM AUTO 
• Action: DAO (Double Action Only) 
• Capacity: 22+1 rounds 
• Barrel Length: 4.71 inches 
• Overall Length: 8.3 inches 
• Weight: 32 oz 
• Finish Color: Flat Dark Earth (FDE) 
• Sights: Steel sights with Tritium lamps, dovetail-mounted 
• Grip Type: FDE interchangeable backstrap 
• Trigger Type: Standard trigger with clean break 
   

Features 

The low-profile optics mounting system on the slide fits most red dot footprints without gunsmithing. Dual slide stop levers and magazine releases are ambidextrous. Interchangeable backstraps let shooters adjust grip dimensions. The feed ramp geometry is designed to minimize feed malfunctions. 
 

Use Cases 

The 22+1 magazine capacity in a 10mm AUTO platform is the defining feature of this configuration. That capacity is unusual for the caliber and gives the 510 Tactical a real advantage in defensive scenarios or high-volume range use. The 10mm cartridge's energy is also viable for hunting applications where a semi-automatic sidearm is preferred. The FDE color suits field use without showing dirt as readily as black.

Owners discussing the FN 510 Tactical FDE with 22+1 capacity focus on a consistent set of strengths and a couple of recurring concerns.

Build quality gets the most consistent praise. FN's manufacturing reputation is well-established, and owners of the 510 Tactical find it lives up to that. The finish is uniform, the action is tight, and the materials hold up to range use.

The optics-ready feature is a standout for competition and tactical shooters. Mounting a red dot without gunsmithing is a practical advantage that owners in these communities specifically value.

The 10mm caliber generates genuine enthusiasm among experienced shooters. The power available from the cartridge is a draw for bear country carry, hunting backup, and those who want a defensive round that exceeds 9mm performance. Some new shooters note the recoil requires adjustment time, but most find it manageable with practice.

The 22+1 capacity is frequently mentioned as a differentiator. Getting that many 10mm rounds in one magazine is uncommon and is a practical benefit in defensive or hunting contexts.

Size and weight are the main practical concerns. At 32 oz the 510 Tactical is not a concealed carry pistol for most people. It's aimed at range use, duty, and open carry.

Aftermarket accessory discussions are active. Owners looking for holsters and optic-specific mounts find the growing popularity of the FN 510 is expanding available options.