The most recent one was Miller, which had no defendant (he had died.)
The court held that in the absence of a showing that a sawed off shotgun was a militia weapon, it cold not receive protection under the second amendment.
Of course, sawed off shotguns were used during WWI, as trench brooms. As written, the ruling would suggest that weapons issued to the Organized Militia (national guard) would be fit subjects for protection under the second amendment to members of the Unorganized Militia. That would include light (not crew served) machine guns.
Title 10, Section 311 has the definition for members of the militia.
What makes you think the National Guard isn't equipped with Ma Deuce, in several of her incarnations? They also have Mk-19 automatic 40 mm grenade launchers, M-1 Abrams tanks, Bradly fighting vehicles with 25mm chain guns F-15 and F-16 fighter jets,A-10 attack aircraft (with 30 mm Gatling cannon), and most "all the terrible implements of the soldier".