Since the U.S. Constitution was written at a time when firearms were limited in capacity to being loaded with just one bullet stored in them, the second Amendment could not even possibly apply to firearms with high capacity magazines.
That constitutional philosophy has major problems.
Freedom of the press & assembly in the 1700s was
by printed paper & crowds in public. Should we limit
1st Amendment liberties to just those? Nah.
I prefer constitutional originalism, ie, discerning the intent.
"Press" & "assembly" were about communication in general.
So these rights would apply to electronic venues.
The 2nd Amendment was about militarily capable small arms.
Just as with the "press", arms would increase in capability.