My take:
Even the most conservative Justices (Thomas excepted, for obvious reasons) seem to have left a lot of cover for existing restrictions on military arms. Counterintuitively, they seem to say it's important to protect the right of the individual to show up armed for militia muster as long as they don't do it with anything more powerful than what's commonly available to the average civilian. And, by the way, machine guns (or anything else we decide isn't OK) aren't commonly available since the law makers say they can't be.
Greaaatttt.
God, PLEASE Save the Constitution.
Frankly, I’ll be satisfied if they put semi-autos with normal (high) cap mags off limits to the gun grabbers. Unless you have a mountain of ammo behind you, full auto isn’t much use. Aimed shots will make better use of ammo.