The FN 510 MRD is a double-action-only 10mm AUTO pistol with a 4.1-inch cold hammer-forged barrel and an optics-ready slide. Capacity is 10+1 rounds. The frame is FDE textured polymer with interchangeable backstraps. Overall length is 7.7 inches and weight is approximately 30 oz. The slide is factory-cut for red dot optics and fitted with driftable steel co-witness height iron sights. 
 

Key Specifications 

• SKU: 2024014345 
• UPC: 845737015657 
• Brand: FN 
• Model Name: 510 MRD 
• Caliber: 10MM AUTO 
• Action: Double Action Only (DAO) 
• Capacity: 10+1 Rounds 
• Barrel Length: 4.1 inches 
• Overall Length: 7.7 inches 
• Weight: Approximately 30 oz. 
• Sights: Steel Co-witness Height Sights Driftable 
• Grip Material: FDE Textured Polymer 
• Safety Features: None 
• Finish Color: Flat Dark Earth 
• Condition: New in Box 
   

Detailed Features 

1. Optics Ready Slide: Factory-cut for direct red dot mounting without gunsmithing. 
2. Polymer Frame: Textured FDE grip with good abrasion resistance and interchangeable backstraps for hand fit. 
3. Cold Hammer-Forged Barrel: Polished feed ramp improves reliability across different 10mm load profiles. 
4. Ambidextrous Controls: Slide stop and magazine release work for left- and right-handed shooters. 
5. Interchangeable Backstraps: Three sizes included for grip adjustment. 
    

Usage Scenarios 

• Home Defense: 10+1 capacity and 10mm stopping power in a manageable package. 
• Competitive Shooting: Optics-ready from the factory speeds up red dot installation for matches. 
• Outdoor Adventures: 10mm AUTO is a practical choice where bears or large predators are a consideration.

The FN 510 MRD in FDE generates a fairly consistent pattern of feedback. Build quality and reliable operation are the leading positives -- the pistol functions well across different 10mm load weights, which is notable given how much 10mm ammunition varies in pressure.

The optics-ready slide is the feature owners mention most positively. Being able to mount a red dot without additional machining is convenient, and the co-witness iron sights provide a usable backup. The grip texture and ergonomics draw good marks; most shooters find it comfortable to hold.

The criticisms cluster around size and price. The FN 510 is larger and heavier than many pistols in the category, which rules it out for concealed carry for most people. Aftermarket holsters and accessories are less widely available compared to platforms with a longer market history. The price also runs higher than some 10mm competitors, which draws scrutiny from budget-conscious buyers. Recoil with full-power 10mm is noticeable -- not unusual for the caliber, but worth knowing for newer shooters.