The OP's question was quite simple -
Originally Posted by motoxmann
If one says you must follow a state law that violates the 2nd amendment then...
Is one advocating breaking the law?
The equally unadorned answer is - Yes. They are
advocating breaking the Supreme Law, in favor of some batsh*t local ordinance. The rest is just conjecture on the ramifications of failing to obey that State law should you be accosted by a LEO. However, there was no request for the "what if's" in the original question, so in the interest of brevity (and to avoid the quicksands of investigating legal repercussions) I chose to be succinct.