The XM7, previously known as the XM5, is the U.S. Army variant of the SIG MCX Spear, a 6.8×51mm, gas-operated, magazine-fed, assault rifle designed by SIG Sauer for the Next Generation Squad Weapon Program in 2022 to replace the M4 carbine. The XM7 features a free-floating reinforced M-LOK handguard for direct accessory attachment to slotted hole mounting points.
Soldiers from Training and Doctrine Command with an XM7 rifle (near) and XM250 light machine gun (far).