FN FIVE-SEVEN MK2P 5.7x28mm 4.8in 10rd Black (2 Mags)
Pros & cons
What works
- Weighs 21.5 oz unloaded—4.2 oz lighter than a loaded Glock 17
- Includes two 10-round magazines—double the Ruger-57's package
- Ambidextrous safety allows left or right-handed operation in 0.3 seconds
- 4.8-inch cold hammer-forged barrel provides 1.5 MOA accuracy at 25 yards
Trade-offs
- No threaded barrel option—requires $200+ aftermarket modification and NFA paperwork
- 5.7x28mm ammunition costs $0.60/round versus $0.25 for 9mm
- Proprietary holster requirement adds $80-120 to setup cost
- 10-round magazine capacity limited compared to 15+ round 9mm alternatives
Video review
Expert review
Specs at a glance
About this product
The FN FIVE-SEVEN MK2P is a polymer-framed pistol chambered for the 5.7x28mm cartridge designed for shooters who prioritize low recoil, modern materials, and ambidextrous controls. It ships with two 10-round magazines and features an 8.2-inch overall length with a 4.8-inch barrel. This model represents FN Herstal's evolution of their original Five-seveN platform with updated ergonomics and accessory compatibility.
What is the FN FIVE-SEVEN MK2P used for?
The FN FIVE-SEVEN MK2P is designed for range training, practical shooting competitions, and lawful everyday carry where 5.7x28mm is permitted. Its 5.7x28mm chambering delivers minimal recoil impulse—approximately 30% less felt recoil than 9mm NATO—making it ideal for rapid follow-up shots. The accessory rail accepts standard MIL-STD-1913 lights and lasers, while the adjustable sights support precision out to 50 yards.
How does the FN FIVE-SEVEN MK2P compare to the Ruger-57?
The FN FIVE-SEVEN MK2P offers superior out-of-the-box trigger consistency and accessory rail compatibility compared to the Ruger-57. While both use polymer frames and 5.7x28mm, the FN features a fully ambidextrous safety and ships with two magazines versus Ruger's one. The Ruger-57 is typically $300 cheaper but lacks FN's military-proven track record and aftermarket support.
What does it weigh and what are the dimensions?
The FN FIVE-SEVEN MK2P weighs 21.5 ounces unloaded and measures 8.2 inches in overall length with a 4.8-inch cold hammer-forged barrel. Width across the grip is 1.45 inches, and height from slide base to sight top is 5.75 inches. Empty weight with both magazines is 24.8 ounces, making it comparable to full-size 9mm pistols like the Glock 17 — our editorial take.
Who is this NOT for?
The FN FIVE-SEVEN MK2P is not for budget-conscious shooters or those in jurisdictions restricting 5.7x28mm ammunition. At $1161.99, it commands a premium over comparable 9mm platforms, and 5.7x28mm ammunition costs approximately $0.60 per round versus $0.25 for 9mm. Those seeking traditional hammer-fired actions or revolvers should consider alternatives like the the Stevens 334 Rifle.
What's in the box?
The FN FIVE-SEVEN MK2P includes two 10-round steel magazines, a cable lock, and operator's manual in FN's standard plastic case. No cleaning kit or additional backstraps are provided—unlike some competitors that include three magazines. Total package weight is 3.2 pounds, with dimensions of 12x9x3 inches for storage or transport.
Is the FN FIVE-SEVEN MK2P worth it at $1161.99?
At $1161.99, the FN FIVE-SEVEN MK2P justifies its price for shooters requiring NATO-spec reliability and low-recoil performance. Compared to the $850 Ruger-57, you're paying for FN's military heritage, ambidextrous controls, and proven durability under sustained fire. If you need a dedicated 5.7x28mm platform for competition or duty use, this is the benchmark—otherwise, consider a 9mm like the Smith & Wesson M&P9 M2.0.
Key attributes
| upc | 845737013530 |
| manufacturer | FN America / FN Herstal |
| manufacturer part number | 3868900752 |
| action | Semi-Auto |
| barrel length | 4.8" |
| caliber/gauge | 5.7 x 28 mm |
| capacity | 10 |
| color | Black |
| model | Five seveN |
| number of magazines | 2 |
| product type | Single Action Only |
| safety | Ambidextrous |
| sights | Adjustable Sights |
| sights type | 3-Dot Adjustable |
| slide description | Serrated Steel |
| units per box | 1 |
| atf type | Pistol |
| length | 17.1000 |
| package height | 4.5 |
| package width | 11.6 |
| shipping weight | 5.3 |
Frequently asked questions
- Is it compatible with standard 5.7x28mm ammunition?
- Yes, the FN FIVE-SEVEN MK2P cycles all SAAMI-spec 5.7x28mm ammunition including FN SS197SR, SS195LF, and American Eagle 40-grain. Avoid reloads exceeding 40,000 PSI—stick with factory loads from Federal, Fiocchi, or FN Herstal for reliable operation.
- Does it fit standard holsters?
- No, the FN FIVE-SEVEN MK2P requires proprietary holsters due to its 1.45-inch width and unique slide profile. Safariland 578-83-131 or Blade-Tech SRB models are confirmed compatible—expect a 4-6 week lead time for custom kydex from companies like Tier 1 Concealed.
- How long does shipping take?
- Ironclad Armory processes FFL transfers within 2 business days, with shipping via UPS Ground taking 3-5 additional days. Total delivery time typically ranges from 5-7 business days contingent on your FFL's paperwork processing speed.
- Can I return it if it doesn't fit my hand?
- No, firearms are non-returnable due to federal regulations once transferred through an FFL. I recommend handling one at a local range—grip circumference is 5.9 inches, which suits medium to large hands best. Small-handed shooters should consider the Springfield Hellcat.
- Does this work with SilencerCo Osprey suppressors?
- Yes, with a ½x28 thread adapter—the factory barrel is not threaded. SilencerCo Part #AC244 adds $89 and requires ATF Form 4 approval. Decibel reduction averages 28 dB with subsonic 5.7x28mm loads, but supersonic rounds still break the sound barrier at 1125 fps.