Not a lawyer or anything but how about have the person sign sa document that states he is a resident of NY and ciutizen of the us and that he has never been convicted of a felony or domestic violence and knows of no reason that would prevent him from legally owning a firearm. Also put his name and driver's license number on it and have him sign it. Put it away for safekeeping to cover yourself in the future should anything happen and they come knocking on your door. Just an idea. I would get something though.