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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.
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 Five-seven is a semi-automatic delayed blowback pistol chambered for FN's 5.7×28mm ammunition. [8] The pistol has a concealed hammer. [8] Polymer materials are used extensively in the pistol's design, and even the steel slide is encased in a polymer shell. [11] [28] This provides reduced weight and greater resistance to corrosion.
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 P90, along with a small caliber, high velocity 5.7×28mm cartridge type. [16] The original 5.7×28mm cartridge, called the SS90, went into production with the P90 in 1990. [17]
The AR-57 PDW upper is a new design on AR-15/M16 rifles, blending the AR-15/M16 lower with a lightweight, monolithic upper receiver system chambered in 5.7×28mm. This model is also sold as a complete rifle, supplied with two 50-round P90 magazines. [1]
The .22 Spitfire is an American wildcat rifle cartridge developed by Col. Melvin M. Johnson.It was originally named the MMJ 5.7mm [1] by its designer and is also known in the U.S. as the 5.7mm Johnson, the Johnson MMJ 5.7mm Spitfire, and the .22 Johnson, (or 5.7×33mm internationally).
At nine inches, it is over double the length of the barrel of the FN Five-seven, and only one inch less than the P90's barrel. [12] Kel-Tec has stated that they have no intention of creating any braces or other accessories for the P50, leaving the aftermarket to "do their thing". At 50 yards (45,72 m), the P50 has an average shot grouping of 1. ...
It is chambered for the FN 5.7×28mm cartridge and is characterized by its generally low recoil. It is a competitor to the Five-seven , the Ruger-57 , the M&P 5.7 and the TİSAŞ PX-5.7 . [ 4 ] [ 5 ]