If you argue that gun control requires an amendment to be truly legal that's one thing, but the constitution is not some immutable natural law, and can and should be amended whenever it diesn't serve society's needs. The right to bear arms is about civil defense, and handheld firearms don't offer any real protection against a hostile military. So are you going to rip up the nuclear non-proliferation treaty and allow Donald Trump to build his own flotilla of nuclear submarines? If not, then the role of an armed citizenry needs to be revisited. Even if re-examination results in an affirmation of the right to carry, that process still needs to be followed.