description SIG MCX Spear Overview
The SIG MCX Spear is an American gas-operated rifle selected in 2022 as the winner of the U.S. Army's Next Generation Squad Weapon program, replacing the M4 carbine.
help SIG MCX Spear FAQ
What caliber does the SIG MCX Spear use?
The military version of the SIG MCX Spear, officially designated as the XM7, fires the newly developed 6.8x51mm SIG Fury cartridge. This high-pressure round was selected by the US Army in 2022 to provide superior penetration and stopping power compared to the standard 5.56mm NATO.
Is the civilian SIG MCX Spear the same as the military XM7?
The civilian SIG MCX Spear is highly similar to the military XM7, sharing the same short-stroke gas piston operating system and 6.8x51mm chambering. However, the civilian version does not possess the military-specific fire control group required for automatic fire.
Why did the Army choose the SIG MCX Spear over the M4?
The US Army selected the SIG MCX Spear in 2022 as part of the Next Generation Squad Weapon program to effectively penetrate modern body armor at distances exceeding 500 meters. The traditional M4 carbine firing 5.56mm lacked this kinetic energy, necessitating the shift to the heavier 6.8mm cartridge.
How much does the civilian SIG MCX Spear cost?
When SIG Sauer released the civilian MCX Spear to the commercial market, it carried a heavy price tag of around $8,000. This high cost reflects its advanced engineering, titanium components, and cutting-edge high-pressure gas system.
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