STRIPES - Army accepts first delivery of its new service rifle, the XM8 Carbine | Stars and Stripes
The XM8 is a lighter version of the M7, making it easier for soldiers to move in tight spaces while using the Army’s new 6.8mm ammunition.
STRIPES (Lydia Gordon) - Army pushes for yet another newer, lighter service rifle | Stars and Stripes
The XM8 is not intended to replace the service’s primary rifle, the M7, but instead is being developed as a companion weapon.