State gun cases that cite the second amendment are immediately discarded by the lower courts saying that the second amendment doesn't apply to the states.
But the interesting thing is that if a federal machine gun case was challenged on second amendment grounds, the case would have to be brought by a militia member (otherwise he wouldn't have standing in the court).
And you're right. Machine guns qualify as militia-type weapons. 204 robertpaulsen
Male? Aged 17-49 (IIRC)? Able-bodied? you're a member, per federal law. 248 cidonath2
There is no indication he wants to be.