Description
FN 510 MRD 10mm 4.1″ FDE Optic-Ready 15+1
The FN 510 MRD 10mm 4.1″ FDE optic-ready 15+1 is a full-size striker-fired pistol built for shooters who demand 10mm power without the bulk. It ships with two 15-round magazines, four MRD mounting plates, and a premium zippered case. Per FN America specs, the cold hammer-forged barrel and target crown deliver consistent accuracy from the first round.
| Manufacturer | FN America (per manufacturer specs) |
|---|---|
| Model | 510 MRD |
| Material | Polymer frame, steel slide |
| Compatibility | MRD-style optics (RMR, Holosun, etc.) |
| Finish | Flat Dark Earth (FDE) |
| Weight | 28.8 oz (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- Cold Hammer-Forged Barrel with Target Crown — WHY IT MATTERS: This barrel construction resists heat and wear, keeping groups tight even during extended strings. The target crown protects the muzzle crown from dings that could throw shots.
- Optic-Ready Slide with Four MRD Plates — WHY IT MATTERS: You can mount an RMR, Holosun, or similar red dot without sending the slide out. Swap plates in minutes, get on target faster.
- 15+1 Capacity in 10mm — WHY IT MATTERS: You get a full 15 rounds of 10mm Auto in a grip that fits standard hands. That’s more stopping power than a 9mm with comparable capacity.
- Interchangeable Backstraps — WHY IT MATTERS: Adjust the grip angle to fit your hand size. A proper grip means better recoil control and faster follow-up shots.
- Flat Dark Earth Finish — WHY IT MATTERS: FDE reduces glare in the field and matches the most popular rifle and gear setups. It also hides holster wear better than black.
Who It’s For
This pistol is for shooters who run 10mm for hunting, backcountry defense, or high-speed competition. If you already carry a 10mm for bear country or want a hard-hitting optic-ready handgun that can take abuse, the FN 510 MRD fits.
Pros & Cons
- Pros: Reliable feeding with full-power 10mm loads; optic-ready out of the box; 15-round capacity is best-in-class for 10mm; target crown improves accuracy potential.
- Cons: The grip texture is aggressive — some shooters may find it rough against bare skin during long range sessions. You can add talon grips or wear gloves to mitigate this.
Comparison
| Feature | FN 510 MRD | Glock 20 Gen5 MOS | Smith & Wesson M&P 10mm |
|---|---|---|---|
| Caliber | 10mm Auto | 10mm Auto | 10mm Auto |
| Capacity | 15+1 | 15+1 | 15+1 |
| Barrel Length | 4.1″ | 4.6″ | 4.6″ |
| Optic Ready | Yes (4 plates) | Yes (MOS plates) | Yes (CORE plates) |
| Finish | Flat Dark Earth | Black | Black |
| Weight (unloaded) | 28.8 oz | 30.0 oz | 29.5 oz |
| Price | $819.00 | $699.00 | $749.00 |
FAQ
Does the FN 510 MRD come with suppressor-height sights?
Yes. The factory-installed sights are tall enough to co-witness with most red dot optics mounted via the included plates. According to FN America specs, the front sight is serrated to reduce glare.
Can I use the FN 510 MRD for concealed carry?
It’s a full-size pistol with a 4.1″ barrel and 15+1 capacity. It can be carried with a quality OWB or IWB holster and a sturdy belt, but it’s heavier than compact 9mms. It’s better suited for open carry in the woods or duty use.
What optics fit the FN 510 MRD slide?
The slide accepts MRD-style optics including Trijicon RMR, Holosun 407C/507C/508T, and Leupold DeltaPoint Pro. The four included plates cover most common footprints. Check the manual for specific plate-to-optic compatibility.
Does the FN 510 MRD have a threaded barrel?
No. The barrel is not threaded. If you want to add a compensator or suppressor, you will need an aftermarket threaded barrel. The target crown on the standard barrel is designed for accuracy, not accessory mounting.
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Last updated: April 2026
See also: Semi Auto Handguns | 10mm Pistols | FN Handguns
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