Interestingly enough, I read something recently (to be honest I was in a rush and skimmed it so I don't recall details) about US operations in the late 2000s - early 2010s and one of the US soldiers was lugging both a GPMG (M240) and his M4 carbine.
EDIT: Anecdotal, so take that for what it's worth
EDIT: Anecdotal, so take that for what it's worth
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