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The .277 Fury or 6.8×51mm Common Cartridge, [4] [5] (designated as the .277 SIG Fury by SAAMI [1]) is a centerfire rimless bottlenecked rifle cartridge announced by SIG Sauer in late 2019. [2] Its hybrid three-piece cartridge case has a steel case head and brass body connected by an aluminum locking washer to support the high chamber pressure ...
The 6.8mm Remington Special Purpose Cartridge (6.8 SPC, 6.8 SPC II or 6.8×43mm) is a rimless bottlenecked intermediate rifle cartridge that was developed by Remington Arms in collaboration with members of the U.S. Army Marksmanship Unit and United States Special Operations Command [6] to possibly replace the 5.56 NATO cartridge in short barreled rifles (SBR) and carbines.
Compared to the M4A1 carbine weighing 6.34 lb (2.88 kg) unsuppressed, with a basic combat load of 210 rounds in seven 30-round magazines, in total weighing 7.4 lb (3.4 kg), the XM7 rifle weighs about 2 lb (0.91 kg) more and each soldier carries roughly a 4 lb (1.8 kg) heavier load with 70 fewer rounds.
[6] [7] [8] The decision to make the Spear available to the public was criticized by some anti-gun and law enforcement groups. [ 9 ] In January 2022, the SIG MCX-SPEAR was released on the civilian market in 3 standard configurations, which includes the 38.3-inch (970 mm), 35-inch (890 mm), and 24.5-inch (620 mm) length versions, with the former ...
The 6.5 Grendel bullets have a true diameter of 6.71mm / 0.264" and the 6.5 Grendel case can be formed from abundant 7.62x39 cases with a neck re-sizing die, and fire-forming a slight change to the shoulder, if the case is made from brass. Many of the popular 7.62x39 cases are made from steel, which will not work for reforming the shoulder.
5,6mm Gw Pat 90: The 63-grain 5.56×45mm Gewehrpatrone 90 / 5,6mm Gw Pat 90 ("5.6-mm Rifle Cartridge 90") is the Swiss Army's standard 5.56mm Ball round. It is optimized for use with the Sturmgewehr 90 service rifle, both which were adopted in 1987. The Sturmgewehr 90 rifled barrel has 6 right-hand grooves and a Swiss Army specification 254 mm ...
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A U.S. Army graphic detailing the competitors for the program as of December 2020. The Next Generation Squad Weapon (NGSW) program is a United States military program created in 2017 by the U.S. Army to replace the 5.56mm M4 carbine, the M249 SAW light machine gun, and the 7.62mm M240 machine gun, with a common system of 6.8mm cartridges and to develop small arms fire-control systems for the ...