According to North Carolina General Assembly the North Carolina State Constitution says:
ARTICLE I -- DECLARATION OF RIGHTS
Sec. 5. Allegiance to the United States.
Every citizen of this State owes paramount allegiance to the Constitution and government of the United States, and no law or ordinance of the State in contravention or subversion thereof can have any binding force.
Therefore, whereas the United States Constitution says, in its Second Amendment, "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed" any infringement on the right of the people to keep and bear arms by a state law or state ordinance is, by NC Constitution's sec 5 of art 1 is null and void.
Sounds like a trump card to me!