Description
The FN Five-seveN MRD 5.7x28mm 4.8-inch optic-ready pistol gives urban CCW holders a lightweight, flat-shooting platform that takes red dots right out of the box. Its factory-matched mounting system locks in your optic without slide modifications, and the adjustable iron sights co-witness with most micro dots. This is a 20+1 round defensive tool built for tight spaces and fast follow-up shots.
| Manufacturer | FN America |
|---|---|
| Model | Five-seveN MRD |
| Material | Polymer frame, steel slide (per manufacturer specs) |
| Compatibility | Accepts multiple optic footprints via included mounting plates |
| Finish | Black matte |
| Weight | 21.0 oz (with empty magazine, per FN specs) |
| Condition | New |
Key Features
- Optic-Ready Slide with Proprietary Mounting System — WHY IT MATTERS: You can mount popular red dots like the Trijicon RMR or Holosun 407C using matched plates and hardware, so there’s no guesswork, no gunsmith bill, and no permanent slide cuts.
- Adjustable Iron Sights That Co-Witness — WHY IT MATTERS: If your dot fails in a dark hallway, your backup irons line up immediately without shifting your head position — that split second can save your life.
- High-Capacity 20+1 Magazine — WHY IT MATTERS: In an urban self-defense scenario, you want every round you can carry. The 5.7x28mm cartridge gives you low recoil and high velocity, so you can put more shots on target faster.
- Ambidextrous Safety and Picatinny Rail — WHY IT MATTERS: Left-handed or right-handed, this pistol works for you. The rail mounts a light or laser for low-light encounters common in city apartments and parking garages.
- Cold Hammer-Forged, Chrome-Lined Barrel — WHY IT MATTERS: Per FN specs, this barrel lasts longer than standard rifled barrels and resists corrosion from humidity — a real win for carry guns that sweat in holsters.
Who It’s For
This pistol is built for the city carrier who wants a lightweight, high-capacity handgun that’s optics-ready from the factory. If you live in an apartment and need a defensive tool that works in close quarters, the Five-seveN MRD’s low recoil and 20+1 capacity let you train longer and shoot faster. It’s also ideal for shooters with hand strength issues — the 5.7 round cycles smoothly without the snap of a 9mm.
Pros/Cons
- Pro: Optics-ready without aftermarket milling — saves you $150–$200 in gunsmith fees.
- Pro: 20+1 rounds in a 21-ounce package — you get nearly double the capacity of a typical compact 9mm at similar weight.
- Con: 5.7x28mm ammunition costs roughly double what 9mm costs per round, making range practice more expensive. Plan your budget accordingly.
Comparison
| Feature | FN Five-seveN MRD | Zev Technologies OZ9 | Agency Arms AOS Glock 19 |
|---|---|---|---|
| Caliber | 5.7x28mm | 9mm | 9mm |
| Capacity | 20+1 | 15+1 | 15+1 |
| Weight (empty) | 21.0 oz | 24.5 oz | 22.5 oz |
| Optic Mount | Factory plates (RMR, Holosun, etc.) | Zev spec cut | Agency AOS cut |
| MSRP | $1,003.83 | ~$1,200 | ~$1,100 |
| Best For | Urban CCW, high-capacity carry | Competition, custom builds | Duty use, modular setups |
FAQ
Does this pistol come with mounting plates for my optic?
Yes — the FN Five-seveN MRD includes a set of matched plates and hardware to fit most common micro red dot footprints, including Trijicon RMR, Holosun 407C/507C, and others. Check the manual for the full list.
Can I use standard Five-seveN magazines in the MRD model?
Yes — the MRD uses the same 20-round magazines as the standard Five-seveN. Spare magazines are widely available.
Is the 5.7x28mm round effective for self-defense?
Yes — the 5.7x28mm travels at over 2,000 fps and produces less recoil than 9mm. It penetrates soft body armor and delivers reliable expansion with defensive loads like the SS197SR.
Will the iron sights co-witness with a Holosun 407C?
Yes — the adjustable rear sight and front post are tall enough to co-witness with most micro red dots, including the Holosun 407C and Trijicon RMR.
Does this pistol have a threaded barrel for a suppressor?
No — the FN Five-seveN MRD comes with a standard 4.8-inch barrel. You would need to purchase a threaded barrel separately for suppressor use.
✓ Nationwide delivery (all 50 states)
✓ Ships 1-2 business days
✓ 30-day returns
✓ Secure checkout
Last updated: April 2026
Browse more options: Semi Auto Handguns | Handgun Optics | 5.7x28mm Ammo
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