FN Five-seveN
Semi-automatic pistol in 5.7×28 mm with polymer frame and 20-round double-stack magazine: companion sidearm to the P90, capable of defeating light body armor.
FN Five-seveN
Community
Data trust
- Reliability
- Unverified
- Sources
- Sources pending review
Identity
- Designation
- FN Five-seveN
- Manufacturer
- FN Herstal
- Country
- Belgium
- Year
- 1998
- Category
- Pistol
- Status
- In service
Ballistics
- Caliber
- 5.7×28 mm
- Muzzle velocity
- 650 m/s
- Effective range
- 50 m
- Maximum range
- 100 m
Dimensions
- Barrel length
- 122 mm
- Overall length
- 208 mm
- Empty weight
- 0.62 kg
- Loaded weight
- 0.744 kg
Mechanics
- Operating system
- Delayed blowback (Mk 1) / corto rinculo (Mk 2/Mk 3)
- Bolt / action
- Striker-fired
Feed
- System
- Caricatore bifilare amovibile
- Standard capacity
- 20 rounds
Fire modes
Historical profile
Origins and Development of the 5.7 System
The genesis of the FN Five-seveN dates back to the late 1980s, when NATO began searching for a replacement for the 9x19 mm Parabellum caliber, deemed ineffective against modern Kevlar body armor. FN Herstal responded by initially designing the P90 Personal Defense Weapon, followed in 1998 by the Five-seveN sidearm intended to complement the equipment of logistics units and special forces.
The development process was conducted alongside the standardization of the SS190 ammunition, aiming to miniaturize rifle ballistic performance into a handheld platform. The first production versions, designated Five-seveN Tactical and Five-seveN DAO, underwent extensive testing by various government agencies before entering serial production in the late 1990s.
Technical Features and Design
The architecture of the Five-seveN stands out for the extensive use of polymer materials, which also encase the underlying steel slide to reduce weight and improve corrosion resistance. The original operating system utilizes a delayed blowback mechanism, though more recent variants like the Mk2 have refined internal mechanics to optimize reliability with different propellant loads.
The pistol was designed with advanced ergonomics, offering a generous 20-round magazine capacity without excessive grip size thanks to the slender design of the 5.7x28 mm ammunition. Safety is ensured by an ambidextrous safety lever positioned above the trigger, an unconventional choice intended to facilitate immediate activation with the index finger during the draw.
Operational Service and Global Deployment
Since its introduction, the Five-seveN has been adopted by over 40 nations, seeing extensive use in elite units such as the French GIGN and the United States Secret Service. In particular, its ability to defeat CRISAT standard protection at moderate ranges made it the preferred choice for VIP protection details and counter-terrorism units involved in high-risk scenarios.
Beyond institutional success, the weapon saw wide distribution in the American civilian market, albeit with restrictions on SS190 armor-piercing ammunition, which remains limited to law enforcement. Despite controversies raised by some agencies regarding its penetration capabilities, the pistol has demonstrated excellent field accuracy and 30% less recoil than traditional calibers, facilitating rapid follow-up shots.
Evolution and Industrial Legacy
The technological legacy of the Five-seveN is evidenced by the continuous updating of the platform, culminating in the launch of the Mk3 MRD model in 2022, which introduces native compatibility with micro red dot optics. This evolution demonstrates the resilience of the original design, capable of adapting to modern urban combat doctrines that favor modularity and rapid target acquisition.
The success of the 5.7x28 mm system has also prompted other global manufacturers to develop competing firearms in the same caliber, definitively validating the high-velocity defense cartridge concept initially pioneered by FN. Today, the Five-seveN remains the technical benchmark for this category, maintaining a prominent position in both government tactical inventories and private collections worldwide.
Variants
Main users
Stati Uniti (USSS) · Francia (Police Nationale) · Canada · Belgium · oltre 40 paesi
Key components
- ●Slide — Slide in polimero su telaio FN, con tacca e mirino.
- ●Telaio — Frame in polimero con rail accessori MIL-STD-1913.
- ●Grip — Grip ergonomico con texture stampata.
- ●Grilletto — Trigger SA con sicura manuale frame-mounted.
- ●Magazine — Caricatore bifilare amovibile da 20 colpi in 5.7×28.
