There is/was a liberal law professor (being redundant here), Sanford Levinson, at the U of Texas Law School who wrote a law review article called, "The Embarrassing Second Amendment". It's a very interesting read.
In the article, Levinson talks about United States v Miller, a SCOTUS case wherein it was decided that Miller, arrested for possessing a sawed-off shotgun, was guilty of violating the National Firearms Act by having a shotgun with a barrel less than 18 inches in length. Miller argued that the gun was protected by the 2nd Amendment. The SCOTUS ruled against Miller, in part, claiming that a sawed-off shotgun was not a part of the normal military arsenal which the 2nd Amendment applied to. (We know that members of the US military and others have used shotguns in WWI, WWII, Korea, Vietnam and other actions. But, I digress.)
Levinson states, "it is difficult to read
Miller as rendering the Second Amendment meaningless as a control on Congress. Ironically,
Miller can be read to support some of the most extreme anti-gun control arguments, e.g., that the individual citizen has a right to keep and bear bazookas, rocket launchers, and other armaments that are clearly relevant to modern warfare, including, of course, assault weapons. Arguments about the constitutional legitimacy of the prohibition by Congress of private ownership of handguns or, what is much more likely, assault rifles, might turn on the usefulness of such guns in military settings."