You guys in NC have different regs than we do in SC, we don't have the handgun permit thing to deal with. So basically you NC guys an additional form of I.D. to present to a seller than we do.
That said I have plenty to loose if I should somehow sell to a prohibited person so I use a B.O.S. with the following disclaimer in the rare instance I sell something papered to me;
By my signature above, I certify that under penalty of perjury that I am not under any legal disability from purchasing or possessing a firearm under federal, state, or local law. I agree to hold seller his heirs and assigns harmless from any actions resulting from my use, possession, improper or unsafe storage or sale of this firearm. Further should I come under disability from possession of a firearm I agree to surrender this firearm to the proper authorities or return it to the seller and assign title to him. I am not acting as an agent for any person, business or agency other than myself for the purpose of this purchase and it is solely for my own use and possession and not for resale, trade, or gift. Seller warrants that this firearm is from his private collection and was not purchased originally for the purpose of resale and he is not a dealer in firearms or weapons and warrants that to the best of his knowledge and belief he purchased the firearm legally. At a later date should the firearm be declared unlawful, illegal to possess or in violation of any local, state or federal law, purchaser his or her heirs and assigns agree to hold seller harmless and without fault or recourse. Seller further states that he is not an expert in firearms and does not guarantee the firearm is safe for use. This is a bill of sale only and does not give the purchaser the right to carry or possess a firearm in violation of any local, state, or federal law. This written bill of sale takes precedence over any oral statements by either seller or purchaser.