Description
The FN Five-seveN MRD runs a unique cartridge and deserves a magazine that's built to the same standard as the pistol itself. This is exactly that — a genuine factory OEM magazine from FN America, made specifically for the Five-seveN MRD (Mk3) platform and chambered in 5.7x28mm.
The construction is all polymer, with an injection-molded housing and follower made from impact-resistant, glass-filled nylon. The spring is a precision-wound, high-tensile music wire coil that keeps consistent tension across all 20 rounds. The feed lips are precision-engineered for a snug, wobble-free fit, and the removable polymer baseplate makes field stripping and cleaning straightforward. That double-column, double-feed layout is worth noting too — it functions more like a compact rifle magazine than a typical pistol mag, which is a big part of why the Five-seveN feeds so reliably.
One thing that trips people up: this magazine is designed specifically for the MRD / Mk3 pistol. It is not the same as the older USG or Mk2 magazine. If you're running one of the earlier Five-seveN variants, you'll want to look at the magazine built for that platform. If you've got the MRD, this is your mag.
At 20 rounds of fast, flat-shooting 5.7x28mm, you get a lot of trigger time before needing to reload. Whether you're running drills at the range or just want a few spare mags on hand, this is a straightforward choice. Sold individually.
Key Specifications
- Manufacturer: FN America / FN Herstal
- MPN: 20-100682
- UPC: 845737015459
- Caliber: 5.7x28mm
- Capacity: 20 Rounds
- Compatible Model: FN Five-seveN MRD / Mk3 Only
- Body Material: Impact-Resistant Glass-Filled Nylon Polymer
- Follower: Injection-Molded Polymer
- Spring: High-Tensile Music Wire
- Feed Design: Double-Column / Double-Feed
- Baseplate: Removable Polymer
- Finish: Black
- Style: Detachable Box Magazine
- Units Included: 1
What’s Included
- 1x FN Five-seveN MRD 20-Round 5.7x28mm Magazine
Frequently Asked Questions
Will this magazine work in my older FN Five-seveN USG or Mk2?
This magazine is built specifically for the FN Five-seveN MRD (Mk3) and is not the same as the magazine designed for the USG or Mk2 models. FN made distinct OEM-fit versions for each platform. For best reliability and proper fit, use the magazine that matches your specific pistol variant.
Is this a genuine FN factory magazine or an aftermarket part?
This is a 100% genuine factory OEM magazine made by FN America to the same specifications and tolerances as the magazine that ships with the pistol. It uses the same materials and manufacturing process as the original, so fit and function are exactly what you'd expect from the factory.
How does loading a Five-seveN magazine compare to a standard pistol mag?
The Five-seveN uses a double-column, double-feed design that's much closer to loading an AR-15 magazine than a typical pistol mag. You push rounds straight down rather than angling them in and under, which most people find faster and more intuitive once they get used to it.
Can I disassemble this magazine for cleaning?
Yes. The baseplate is removable, which allows you to fully disassemble the magazine for cleaning and maintenance. It's a straightforward process and something worth doing periodically if you shoot frequently or store magazines long-term.
Is 20 rounds the standard capacity for the FN Five-seveN MRD?
Yes, 20 rounds is the standard capacity for the Five-seveN MRD. FN also offers a 10-round version for areas where higher-capacity magazines are restricted. The 20-round mag ships with the pistol from the factory and is considered the full-capacity option for this platform.
How many of these magazines should I pick up?
Most people who shoot the Five-seveN regularly find that having at least two or three spare magazines makes range sessions a lot more enjoyable. The 5.7x28mm round loads quickly thanks to the rifle-style magazine design, but having extras on hand saves you from constantly loading between strings of fire.





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