The FN 510 MRD is a double-action-only 10mm AUTO pistol with a 4.1-inch cold hammer-forged barrel and optics-ready slide. This is the black finish variant. Capacity is 10+1 rounds and weight is approximately 31 oz (1.9 lbs). Overall length is 7.7 inches. The slide has universal cuts for most red dot footprints and ships with driftable steel co-witness iron sights. The fully ambidextrous slide stop lever and magazine release work for both left- and right-handed shooters. 
 

Key Specifications 

• SKU: 2024014344 
• UPC: 845737015633 
• Brand: FN 
• Model Name: 510 MRD 
• Caliber: 10MM AUTO 
• Action Type: Double Action Only (DAO) 
• Capacity: 10+1 RD 
• Barrel Length: 4.1 inches (cold hammer-forged) 
• Overall Length: 7.7 inches  
• Weight: Approximately 31 oz (1.9 lbs) 
• Sights: Driftable Steel Cowitness with Fixed Sights 
• Grip Material: Black Textured Polymer 
• Finish Color: Black 
• Condition: New in Box 
   

Detailed Features 

1. Optics Ready Slide: Universal optic cuts accept most red dot sights without additional machining. 
2. Fully Ambidextrous Controls: Slide stop and magazine release are mirrored for left-handed operation. 
3. Cold Hammer-Forged Barrel: Polished feed ramp improves cycling reliability across 10mm load varieties. 
4. Interchangeable Backstraps: Adjustable grip fit for different hand sizes. 
5. Driftable Steel Sights: Co-witness with most micro red dot optics -- iron sights remain usable if the optic is removed. 
    

Usage Scenarios 

1. Home Defense: 10+1 capacity and 10mm power in a compact enough package for home use. 
2. Sport Shooting: Optics-ready out of the box; works for accuracy-focused competition formats. 
3. Tactical Training: Accepts lights and lasers via the accessory rail.

The FN 510 in black finish draws consistent positive sentiment from owners who value reliable operation in a 10mm platform. Build quality is the most frequently praised aspect -- the pistol feels well-made and holds up across varied ammunition.

The optics-ready design is the top practical selling point. Owners appreciate being able to mount a red dot immediately. The trigger draw is noted for consistency, and the ergonomics suit most shooters well.

On the critical side, weight is the most common complaint -- at 31 oz the 510 runs heavier than many polymer-framed competitors, which affects carry practicality. Some experienced shooters prefer alternative calibers or platforms for competition use where the 10mm recoil characteristics are a factor. Individual preferences around grip angle and control placement occasionally come up as well. Overall the FN 510 earns positive marks from its target audience of self-defense and tactical users.