The New FN Five-seveN MRD & Is It Worth It?

Origins of the FN Five-seveN and 5.7x28

The discussion opens with the history of the FN Five-seveN pistol and the 5.7x28 cartridge. In the 1990s, NATO sought a new personal defense weapon and sidearm combination using the same round, with a requirement to defeat Level IIIA body armor. FN responded by developing the 5.7x28 cartridge, the P90 PDW, and the Five-seveN pistol. The 5.7x28 is described as a spicy, potent cartridge that has built a dedicated following over time. For many years, the main platforms chambered in 5.7x28 were the PS90 and the original Five-seveN. More recently, companies like CMMG and Ruger, with the Ruger-57 pistol, have expanded the 5.7x28 ecosystem and pushed FN to update its design with the new Five-seveN MRD (often referred to as the Mark III).

Design, controls, and shooting the original Five-seveN

Attention turns to the standard FN Five-seveN, which carries an MSRP just above $1,300. Despite the price, the pistol feels extremely light, almost airsoft-like, yet it remains a very capable platform for the 5.7x28 cartridge. It offers a 20-round magazine in a full-size frame, giving substantial capacity with minimal recoil. The barrel is a cold hammer forged FN barrel of roughly four and a half inches, and the pistol includes high-profile sights and a Picatinny rail for lights or lasers. Controls are straightforward: an ambidextrous frame-mounted safety positioned where the trigger finger naturally rests, a slide release on the left side, and a magazine disconnect that prevents firing without a magazine inserted. On the range, the muzzle stays flat and recoil is minimal, making it easy to keep sights on target. The trigger has some take-up, a clear wall, and a predictable reset, with aggressive but comfortable grip texturing.

Introducing the FN Five-seveN MRD

The newer FN Five-seveN MRD is then introduced, with an MSRP around $1,450. It retains the cold hammer forged barrel, general layout, and 5.7x28 chambering of the original, but updates several ergonomic and functional details. The grip texture is revised with more custom-style stippling on the side panels that feels less aggressive while still secure. The pistol remains snappy due to the cartridge but is easy to control. The trigger on the MRD feels slightly shorter in travel, with a defined wall and clean break similar to the original. Overall, the MRD keeps the same basic operating controls, including the frame-mounted ambidextrous safety and left-side slide release, but refines the feel in the hand and slightly alters the frame and grip geometry.

MRD trigger, sights, and optics-ready slide

The focus shifts to the MRD’s shooting characteristics and sighting system. The trigger is demonstrated with a modest take-up, a clear wall, and a consistent reset, comparable to the original Five-seveN. The MRD uses high-profile sights similar in layout to the standard model, but they are day-glow style: they can be charged with a flashlight to glow brightly in low light, though they are not tritium. The major change is the optics-ready slide. The MRD is cut to accept various red dots using appropriate plates, supporting brands such as Trijicon and Holosun, with FN claiming co-witness capability with most options when the correct plate is used. Forward slide serrations are slightly larger but less aggressive than on the original. An undercut at the trigger guard allows a higher grip, reducing knuckle rubbing and improving comfort during extended shooting.

Side-by-side comparison of ergonomics and triggers

Both pistols are compared side by side to highlight differences in ergonomics and controls. The MRD’s slide is visually fuller at the front compared to the slimmer nose of the original Five-seveN, likely to complement the addition of a red dot. Slide serrations on the MRD are larger but finer, while the original has more aggressive cuts that some may prefer for manipulation. Grip stippling differs: the standard Five-seveN leaves the FN logo area smooth, whereas the MRD carries stippling around that area for more consistent texture. Trigger checks on both guns show similar characteristics: serrated triggers with a bit of take-up, a defined wall, and a short reset with slight travel. Any perceived difference in trigger feel seems minor, suggesting the mechanisms are essentially the same, with familiarity possibly accounting for the MRD feeling slightly better in use.

Is the MRD price premium worth it?

The conclusion addresses whether the FN Five-seveN MRD justifies its higher price over the original. Functionally, both pistols perform very well, remain lightweight, and share the same 5.7x28 chambering, 20-round capacity, and overall reliability. The MRD’s main advantages are its optics-ready slide, updated grip texture, slightly revised ergonomics, and day-glow sights. For shooters planning to mount a red dot on a pistol, the MRD’s factory optics cut is presented as the deciding factor and worth the extra cost. Those who prefer iron sights and do not prioritize pistol-mounted optics may find the original Five-seveN entirely sufficient. Both designs feel somewhat plasticky due to their polymer-heavy construction and 1990s origins, yet the platform has remained in service for roughly two decades with various countries and agencies, supporting its credibility and long-term viability.