FN Five-seven
From Wikipedia, the free encyclopedia
| Five-seveN | |
|---|---|
 The FN Five-seveN USG with a Surefire light. |
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| Type | Pistol |
| Place of origin | Belgium |
| Production history | |
| Designed | 2000 |
| Manufacturer | FN Herstal |
| Produced | 2000–present |
| Variants | See Variants |
| Specifications | |
| Weight | USG: 617 g (1.36 lb) empty USG: 744 g (1.64 lb) loaded IOM: 590 g (1.3 lb) empty |
| Length | 208 mm (8.2 in) |
| Barrel length | 122 mm (4.8 in) |
| Width | USG: 39mm (1.88 in) IOM: 35 mm (1.4 in) |
| Height | USG: 137mm (5.4 in) IOM: 145 mm (5.7 in) |
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| Cartridge | 5.7 x 28 mm |
| Action | Delayed blowback |
| Rate of fire | Semi-automatic |
| Effective range | 50 m (~55 yd) |
| Feed system | 10-, 20-, or 30-round detachable box magazine |
| Sights | "3-dot" type; square notch rear, vertical post front |
The Five-seveN is a semi-automatic pistol manufactured by Fabrique Nationale de Herstal (FN).
FN created the new 5.7 x 28 mm cartridge for its FN P90 personal defense weapon to meet NATO requirements released in 2000. Subsequent to this, FN created the Five-seveN pistol around the cartridge to offer agencies who adopt the P90 the option of a corresponding sidearm.
Contents |
[edit] Overview
Conventional sidearms usually use the 9 x 19 mm, .45 ACP and similar cartridges that are effective for stopping a hostile individual in ordinary circumstances. However, FN argues that if that individual is wearing a light Kevlar vest, these bullets will be stopped without causing lethal damage. Such body armor is currently in use with over 50% of the world’s armed forces. Law enforcement officers also need the ability to pierce body armor, as it is worn by an increasing number of criminals. FN claims that thanks to the use of their newly designed 5.7 x 28 mm cartridge, the Five-seveN is capable of piercing the older U.S. Army PASGT vest at 300 meters range, and a U.S. Army PASGT helmet at a range of 240 meters. However, these penetration statistics are for the military SS190 cartridge. Other available cartridge variants are not armor-piercing, according to the BATFE. These cartridges are loaded with heavier, expanding projectiles driven at lower velocities.
After penetration, the 5.7 mm round is marketed as being able to effectively incapacitate an enemy, but there has been controversy over these claims. Conventional hollow point bullets rely on expansion to create a large wound channel, but the Five-seveN's ammunition is designed to hit the enemy, travel a few inches, then tumble end over end and continue traveling in this manner without deforming. This means that the wound it creates would be as tall as the length of the projectile (more than 21 mm), supposedly creating a more grievous wound channel, but without the expansion of a hollow point or the fragmentation of a frangible bullet. As a result, FN claims the round—and the Five-seveN—are suitable for military use.
The advantages of the pistol itself include its weight (the 5.7 mm round weighs half as much as a standard 9 mm round), its recoil (FN claims the 5.7 mm round produces roughly half the felt recoil of a 9 mm round), and its 20-round magazine, which holds significantly more ammunition than other pistols. Despite its magazine capacity, the Five-seveN is a light pistol, weighing 1.6 pounds loaded. It is also reasonably compact.
Though seemingly an effective weapon, the Five-seveN has not been widely adopted, due mostly to the unconventional concept and ammunition. Current users include several international special forces/counter-terrorist groups (including the French GIGN) and a large number of local police department SWAT teams (including some in the United States).
A civilian application for the Five-seveN in rural areas, though very rare, is hunting small game such as coyotes and foxes. The 5.7 x 28mm cartridge, being a high velocity rifle bullet, has enough velocity and energy to kill small game effectively.
[edit] Controversy
There has been some controversy over claims that the Five-SeveN is a "cop-killer" gun. The debate rests on the armor piercing capabilities of the military and law enforcement version (SS-190) of the 5.7 x 28 mm cartridge. This type of ammunition however, is not available to the public and does not provide any greater danger or armor piercing capability than many much more powerful, unrestricted and commonly available rifle cartridges not even designed specifically for armor piercing. The civilian SS-196 ammunition is standard lead core jacketed bullet but does retain the much higher muzzle velocity of SS-190.
The misconception stems from the fact that certain rounds of 5.7 x 28 mm ammunition are designed for optimal armor piercing effect. This does not mean however, that all types 5.7 x 28 mm ammunition have special or abnormal armor piercing capability and in fact even the armor piercing 5.7 x 28 mm cartridge has less armor piercing effect than standard 5.56 x 45 mm NATO ball ammunition.
[edit] Variants
[edit] Five-seveN
The original Five-seveN, now discontinued. It has a double action (DA) trigger and no safety. This makes shooting slower and less accurate than with the newer single action variants of the Five-seveN. It features a shaped trigger guard, designed to facilitate gloved use.
[edit] Five-seveN Tactical
This model is identical to the original version, with the exception of the single action (SA) trigger and a safety device. The Five-seveN Tactical is also increasingly hard to find.
[edit] Five-seveN IOM
The IOM model (for Individual Officer's Model) was the first publicly available variant, debuting commercially in 2004. The IOM is similar in its basic design to the original versions, but differs in that it has a different accessory rail, lined trigger guard outside edge, and adjustable sights. It also incorporates a magazine disconnect—this safety mechanism prevents the weapon from being fired without the magazine inserted.
[edit] Five-seveN USG
The most recent version of the Five-seveN, the USG. (United States Government) variant debuted in 2005 and replaced the IOM. The USG keeps the differences incorporated in the IOM, such as the magazine disconnect and adjustable sights, but has further modifications, including: conventionally-shaped (square) trigger guard, checkered grip pattern, and a larger, reversible magazine release.
[edit] Accessories
All models of the Five-seveN can also be mounted with a laser aiming module (LAM) or a tactical flashlight on the accessory rail. There are various companies that make these devices for various firearms.
A threaded barrel is available for mounting a suppressor. Again, various manufacturers provide their models and variations of suppressors. The final choice, however, is for the owner or department to make.
FN produces night sights for the DAO and Tactical models. These sights do not fit the IOM and USG models without gunsmithing. Trijicon is slated to produce tritium night sights for the IOM and USG models, but they are not available yet. There are also other companies that produce sights for various pistols that may or may not require gunsmithing.
As with all pistols, holster options are limited only to the choice that the individual or department makes. There are myriads of options one can make when deciding on a holster for their sidearm.
A magazine extension for the Five-seveN is available that will extend 1.75 inches below the weapon. It allows the Five-seveN to hold ten extra rounds, for a total of thirty.
