It'll be ironic to make it historical to the point of that MG being a .50, .30, or not there at all, and then have it suffer gamey Jeep exploits.
Anytime there is a choice between historical configurations, the most common one should be chosen, provided it's the one that best fits with the MA's gameplay... untill Combat Tour at least.
If we didn't get rid of the most common variants, there'd be thing such as BK5 sniping of bombers, and then you'd have bomber pilots making a stink of it.