The standard National MG appears to be a conglomeration of the German MG 34 general-purpose machine gun and MG 08/15 "light" machine gun, the former being widely used in WWII and the latter being infamous for its use in Nazi concentration camps. The files indicate the MG40 variant of the M1919asorigin, but they most likely didn't take it too seriously.
The National Uber MG is a seemingly improvised design, with an overall shape similar to the Browning M2 and MG 131 heavy machine guns. The later was mainly used by the Luftwaffe as an aircraft gun and AAA turret.
This weapon has identical or major analogic behaviour to Maxwell's Machinegun. Tactics, guides, playstyles and tips can be found over there and apply 1:1 here. To avoid redundant text and the need of updating each seperate page in case of changes, the current article won't include tactics and such.
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