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The FN 5.7×28mm (designated as the 5.7×28 by the C.I.P. [7] and FN 5.7×28mm NATO [9]) is a small-caliber, high-velocity, smokeless-powder, rebated, non-tapered, bottleneck, centerfire cartridge designed for pistols and personal defense weapons (PDW) uses, manufactured by FN Herstal. [10]
Cartridge: FN 5.7×28mm [8]: Action: Delayed blowback [8]: Rate of fire: Semi-automatic [8]: Muzzle velocity: 762 m/s (2,500 ft/s) (SS198) [10]625 m/s (2,050 ft/s ...
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The 3-inch 20 cwt gun was superseded by the QF 3.7-inch (94 mm) AA gun from 1938 onwards, but numbers of various Marks remained in service throughout World War II. In Naval use it was being replaced in the 1920s by the QF 4-inch (100 mm) Mk V on HA (high-angle) mounting.
In 1887 the Belgian War Ministry ordered 185 5.7 cm fortress guns to arm their fortresses including Namur and Liege.The 5.7 cm Maxim-Nordenfelt was a short 26 caliber gun and not the longer 42-50 caliber QF 6-pounder Nordenfelt naval gun.
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).
The gun uses a smooth single-action striker-fired trigger mechanism. [2]The frame is made out of polymer, [6] the slide and barrel are made out of 416 stainless steel [7] and the magazine is made out of black oxide alloy steel. [8]
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