The 2a doesn’t, or didn’t until 2010, make reasonable gun control outside government legislation.
It was a sharp shift to the constitution first in 2008 at the federal level and then applied to the states under the doctrine of incorporation in 2010.
Gun nuts like to pretend it is some eternal constant, or more likely most of them simply don’t know the law here and are just parroting the gun lobby take on things, but it’s a straightforward fact that the individualized right to own guns didn’t even really exist until 2008 and the near complete inability to pass any gun laws didn’t exist until 2010.
The 2a was reinterpreted very recently. Before 2008 it wasn’t well defined and most assumed the bit about militias had something to do with it. Scalia basically is the one who decided to edit out that part of the constitution by calling it a preamble, which is extremely against the fundamental principles of constitutional interpretation which is to assume every word was written for a reason.
And for the record I like guns and am for gun policies that allow sane and healthy adults to have guns.