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FN Five-seven (5.7x28mm handgun designed by FN Herstal to accompany the P90) AR-57 (AR platform rifle firing FN 5.7x28mm fed from a 50rd P90 magazine) Kel-Tec P50 (Semi-automatic pistol chambered in FN 5.7x28mm) ST Kinetics CPW (multi-caliber SMG/PDW able to be chambered in FN 5.7x28mm) Personal Defense Weapon; List of bullpup firearms
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]
The FN P90, Kel-Tec P50, and AR-57 personal defense weapons use horizontally mounted feeding systems. The magazine sits parallel to the barrel, fitting flush with the top of the receiver, and the ammunition is rotated 90 degrees by a spiral feed ramp before being chambered.
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 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).
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]
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 FN P90 uses the bullpup layout in conjunction with a unique top-mounted feeding system, making it the most compact submachine gun with a fixed stock. The bullpup design places the gun's action mechanism and magazine behind the trigger, and the receiver functionally serves as the buttstock with usually only a thin endplate, [ 5 ] making the ...