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In C.I.P. regulated countries, every rifle cartridge combination has to be proofed at 125% of this maximum C.I.P. pressure to be certified for sale to consumers, referred to as "PE". This means that 5.7×28mm chambered arms in C.I.P. regulated countries are currently (2018) proof tested at 4,313 bar (431 MPa; 62,555 psi) PE piezo pressure. [ 7 ]
FN Five-seven. The FN Five-seven (stylized as Five-seveN) is a semi-automatic pistol designed and manufactured by FN Herstal in Belgium. [ 8] The pistol is named for the 5.7×28mm cartridge's bullet diameter, and the trademark's capitalization style is intended to emphasize the manufacturer's initials— FN. [ 14]
A PSA 5.7 Rock with a threaded barrel and a 23 round magazine. The 5.7 Rock is a semi-automatic pistol developed, manufactured, and sold by Palmetto State Armory. [ 2] 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, Ruger-57, and M&P 5.7. [ 4][ 5]
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 magazines mount horizontally on top of the front handguard, with brass ejecting through ...
The FN P90 is a personal defense weapon chambered for the 5.7×28mm cartridge, also classified as a submachine gun, designed and manufactured by FN Herstal in Belgium. [ 9][ 10][ 11] Created in response to NATO requests for a replacement for 9×19mm Parabellum firearms, the P90 was designed as a compact but powerful firearm for vehicle crews ...
10- or 20-round box magazine [1] Sights. Adjustable rear sight and fiber optic front sight [1] The Ruger-5.7 is a semi-automatic pistol introduced in December 2019 by Sturm, Ruger & Co. [3] It is the first traditionally-styled semi-automatic pistol to be chambered for the 5.7×28mm cartridge since the introduction of the Excel Arms MP-57 in 2012.
2,700 ft/s (820 m/s) 810 ft⋅lbf (1,100 J) Source (s): Barnes & Amber. 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 ...
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