New Army "Caliber Configuration Study"

[stanc]

Why don't we simply stay with Michael's definition :

The only reason for not using this is if someone can dig up a current, authoritative Army Field Manual or Marine Corps equivalent that suggests a revision.

The main reason for not using it is that it's inaccurate. Even if older weapons (for example, the M1918 BAR) are left out, the M27 IAR is not a light machine gun.