Nice, I've been thinking about early BARS, but I haven't tried it. Mostly because I though it'd make me commited to rifles too much. I guess it's worth some testing though. Especially that BAR upgrade still leaves you with enough time to change your strategy if your opponent goes fast vehicles, because of the high ammo cost (which is ironically a blessing in this case

).
I have one critique to the guide. You use the form "Obersoldatens", which is incorrect. "Obersoldaten" is plural, so adding an "-s" there is a mistake. It's pretty much the same as wrtiting "Riflemens" in case of Riflemen

.