It's a misdeamenor in NC...see my bold text
From NC firearms laws...note my bold...
3.State Buildings
It is also unlawful under state law, for any person to possess or carry a weapon, not used for instructional or officially sanctioned ceremonial purposes, in the State Capitol Building, Executive Mansion, Western Residence of the Governor, or on the grounds of these buildings, including any building used to house any Court of the General Court of Justice. Persons exempted by the provisions of G.S. 14-269(b) are not bound by this prohibition. These persons are set forth in Paragraph III. A. of this publication. Also exempt are persons in possession of weapons for evidentiary purposes, or who are delivering the weapon to a law enforcement agency. This prohibition does not apply to state owned rest areas, rest stops along the highways, and state owned hunting and fishing reservations. Possessing or carrying a weapon in these areas is a misdemeanor. A concealed handgun permit does not allow a permittee to carry a weapon in these areas.