I know you need NFA paperwork when crossing state lines with NFA items, but what about when just transporting them to and from the range? Am I legally required to have, at minimum, photocopies of my Form 4 for each item when not at home? I ask because I had the senior RSO at a range I frequent tell me it was the law. I always have copies with me when I go to the range mostly because the RSOs feel they are junior ATF agents.