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The 5.7×28mm cartridge was designed by FN Herstal specifically for use in the FN P90 personal defense weapon and FN Five-seven pistol. [11] Subsequently, it has been used in a number of other weapons, such as the FN PS90 carbine and the AR-57, an upper receiver for M16 and AR-15 rifles.
FN Five-seven (5.7×28mm handgun designed by FN Herstal to accompany the P90) AR-57 (AR platform rifle firing FN 5.7×28mm fed from a 50rd P90 magazine) Kel-Tec P50 (Semi-automatic pistol chambered in FN 5.7×28mm) ST Kinetics CPW (multi-caliber SMG/PDW able to be chambered in FN 5.7×28mm) Personal Defense Weapon; List of bullpup firearms
FN Herstal was the first small arms manufacturer to respond to NATO's requirement; FN started by developing a shoulder-fired personal defense weapon, the FN P90, along with a small caliber, high velocity 5.7×28mm cartridge type. [1] The original 5.7×28mm cartridge, called the SS90, went into production with the P90 in 1990. [24]
Mitrailleuse d´Avion Browning - F.N. Calibre 13,2 mm airplane machine gun FN Five-seven pistol with 5.7×28mm cartridges P90 personal defense weapon United States sailor fires an M240B, a U.S. version of the FN MAG, adopted for infantry use in the 1990s Early M249 manufacture of FN Minimi U.S. Marine aiming FN 303 fitted with holographic weapon sight FN 5.7×28mm cartridges as used in P90 ...
The AR-57, also known as the AR Five Seven, is available as either an upper receiver for the AR-15/M16 rifle or a complete rifle, firing 5.7×28mm rounds from standard FN P90 magazines. [3] [4] It was designed by AR57 LLC. [5]
Introduced in 1991, the FN P90 features a bullpup design with a futuristic appearance. It has a 50-round magazine housed horizontally above the barrel, an integrated reflex sight and fully ambidextrous controls. [18] A simple blow-back automatic weapon, it was designed to fire the FN 5.7×28mm cartridge which can penetrate soft body armor.
The P50 is a straight blowback semi-automatic pistol that feeds from FN P90 magazines. [4] Like the P90, the rounds are rotated at a 90-degree angle from the magazine into the chamber. A Picatinny rail is located on the upper receiver, [5] and a second rail is located below the magazine. [6] The trigger pull is 5 lb (22N).
The 4.6×30mm round is a direct competitor to the 5.7×28mm by Fabrique Nationale de Herstal (FN). As such, the UCP would have been a direct competitor to the FN Five-seven pistol. Both have greater armor-piercing capabilities and less recoil compared to other commonly used military handgun cartridges, such as the 9×18mm Makarov and 9×19mm ...