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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 assault rifle [1] designed by SIG Sauer for the Next Generation Squad Weapon Program in 2022 to replace the M4 carbine.
The SIG MCX-SPEAR is a multi-caliber rifle developed by the American division of SIG Sauer from the SIG MCX series of carbines. The SIG MCX-SPEAR is primarily chambered in .277 SIG FURY but can be adapted to 7.62×51mm NATO and 6.5mm Creedmoor with a barrel change.
The SIG MCX Pistol is the pistol configuration of the rifle with a 229 mm (9 in) barrel or 292 mm (11.5 in) barrel and comes either with the SIG Sauer SBX (pistol stabilizing brace) or SIG Sauer PCB (pistol pivoting contour folding brace).
XM250 with the XM157 fire-control system A non-commissioned officer from Fort Campbell fires an XM250.. The XM250 is the U.S. military designation for the SIG LMG 6.8, a 6.8×51mm (.277 in), gas-operated, belt-fed light machine gun designed by SIG Sauer for the U.S. Army's Next Generation Squad Weapon Program in 2022 to replace the M249 light machine gun.
This new P220 design should properly be called the SIG Sauer system, which was, in fact, the labeling on one of the first SIG Sauer handguns, a modified SIG Sauer P220 design produced for the Browning Arms company in 1977. On the right side of the slide are the words "SIG Sauer System". This was the first SIG Sauer P220 type sold in the US. [12]
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 U.S. Army intends to procure 111,428 M7 Rifles, 13,334 M250 Machine Guns, and 124,749 Fire Control systems through the life or the program. [13] Selected: SIG Sauer: SIG MCX SPEAR rifle and SIG LMG 6.8 belt-fed machine gun with custom 6.8×51 SIG FURY brass-steel hybrid cartridges. Down-selected but rejected:
NGSW-R (Next Generation Squad Weapon - Rifle) (6.8 Common Cartridge) -- Sig Sauer MCX Spear rifle and cartridge selected and ordered by US Army as the XM7 rifle and 6.8 Common Cartridge. MRGG-A (Mid-Range Gas Gun - Assaulter) (6.5mm Creedmoor) Mk 17 Mod 1 (FN SCAR-H) (6.5mm Creedmoor) LMT MARS-H 6.5 DMR (6.5mm Creedmoor)