New Army "Caliber Configuration Study"

[stanc]

In the case of the MMG, I suspect that it might be a matter of "we're expecting to be attacked and recent attacks in this terrain have been from very long range, so we'd better assign an MMG to that patrol"...

That, as well as other missions where an MMG is typically attached. In which case we're back to having two different calibers, and two different machine guns, which negates one of the fundamental premises of the GPC concept.