You do realize that SCOTUS pretty much gutted handgun control in 2008 in District of Columbia v. Heller, 554 U.S. 570 (2008) when they divorced handgun possession from the "well-regulated militia" predicate clause.

And then two years later the decision in McDonald v. Chicago, which was brought in response to Heller and decided in 2010, did invalidate much of Chicago's gun purchase and registration laws, and has called into question many other state and local laws restricting purchase, possession and carry of firearms.