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The XM7, previously known as the XM5, is the U.S. Army variant of the SIG MCX Spear, a 6.8×51mm (.277 in), gas-operated, magazine-fed battle rifle [1] designed by SIG Sauer for the Next Generation Squad Weapon program in 2022 to replace the M4 carbine.
The SIG MCX VIRTUS is the second generation of the SIG MCX series and was introduced in 2017. The SIG MCX VIRTUS Patrol is the standard configuration rifle that features a 406 mm (16 in) barrel, a 1:7 inch twist, a custom SIG Matchlite Duo Trigger for improved accuracy, a folding and collapsing 5-position stock, four handguard lengths to choose ...
The SIG MCX Raptor is a short-barreled rifle variant intended to serve as a carbine, featuring an 8-inch (200 mm) barrel and a Picatinny rail tail interface for attaching either a compact buttstock or a folding PCB (pistol contour brace). It is available in .277 SIG FURY, 6.5 Creedmoor and 7.62×51mm NATO. [12]
The XM250's design is an offshoot of the MG 338 which SIG was also developing for SOCOM. [7] The XM250 light machine gun and XM7 rifle were designed to fire the 6.8×51mm SIG Fury cartridge in response to concerns that improvements in body armor would diminish the effectiveness of common battlefield rounds such as the 5.56×45mm NATO (used in ...
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 ...
HAMR NGSW (Heat Adaptive Modular Rifle) – 6.8mm Federal Cartridge Company cartridge variant entered in the United States Army's Next Generation Squad Weapon Program competition, it was beaten by the XM5 (later redesignated XM7), a SIG MCX Spear variant. Mk 17 Mod 1 6.5mm Creedmoor battle rifle entered in the SOCOM Mid-Range Gas Gun program ...
The origins of the SIG Sauer company lie in the company named Schweizerische Waggonfabrik ("Swiss Wagon Factory"), which was founded in 1853 by Friedrich Peyer im Hof (1817–1900), Heinrich Moser (1805–1874) and Johann Conrad Neher (1818–1877).
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.