I was warned of this during my concealed handgun course.
http://www.jus.state.nc.us/NCJA/ncfirearmslaws.pdf
6. Going Armed To The Terror Of The People
By common law in North Carolina, it is unlawful for a person to arm
himself/herself with any unusual and dangerous weapon, for the purpose of terrifying
others, and go about on public highways in a manner to cause terror to others. The
N.C. Supreme Court states that any gun is an unusual and dangerous weapon for
purposes of this offense. Therefore, persons are cautioned as to the areas they frequent
with firearms