FN Five-seveN MK3 MRD 5.7x28mm
Model: 66-101274
FN Five-seveN MK3 MRD 5.7x28mm
Model: 66-101274
Full Specifications
About This Firearm
The FN Five-seveN MK3 MRD is a single-action 5.7x28mm pistol built for range use and home defense. It has an MSRP of $1,509, and FN designed both the pistol and the cartridge.
The slide is cut for a miniature red dot at the factory and the rear sight is adjustable. Two 20-round polymer magazines come in the box, and the manual safety lever sits on both sides of the frame above the trigger instead of on the slide. The barrel is cold hammer-forged, 4.8 inches with a 1:9 right-hand twist, and it is not threaded, so a suppressor means an aftermarket barrel. FN quotes the trigger from 4.4 to 7.87 lb.
If you're cross-shopping, the Ruger-57 holds the same 20 rounds at 24.5 oz with an MSRP of $549, though its slide is drilled and tapped and the adapter plate is a separate purchase. The Smith & Wesson M&P 5.7 has an MSRP of $699, carries two more rounds, and arrives with a threaded muzzle and an optic cut.
Best For
Strengths & Limitations
- The slide is a machined steel core under a polymer cover, which keeps reciprocating mass low.
- Holsters, magazines and spare parts for the Five-seveN have been on the market since FN introduced it.
- The frame safety is duplicated on both sides and falls under the thumb without the grip shifting.
- Both rivals here chamber the same round for less than half the MSRP.
- The pull range FN quotes is wide enough that two guns off the same line can feel different.
- The muzzle is not threaded, so a suppressor means buying a barrel first.
Category Rankings
How the FN Five-seveN MK3 MRD 5.7x28mm ranks among full-size 5.7x28mm handguns.
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Tisas PX-5.7 FO 5.7x28mm
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Ruger-57 5.7x28mm
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Smith & Wesson M&P 5.7 5.7x28mm
Smith & Wesson
|
— |
|
PSA Rock 5.7 5.7x28mm
Palmetto State Armory
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Diamondback DBX 5.7x28mm
Diamondback
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Frequently Asked Questions
What does MRD mean on this gun?
It is FN's name for the optics-ready slide. Earlier Five-seveN slides were not cut for a dot.
Is it hammer-fired or striker-fired?
Neither in the usual sense. FN lists the action as delayed blowback with a single-action trigger, which is why it feels unlike a striker pistol's.
Where is it built?
Belgium. FN also lists the pistol with ten-round magazines for states that restrict capacity.
