So I have been thinking about this, and thought someone might have the answer. If you were not home and a wife, girlfriend, or anyone else that lives with you were to use your SBS, SBR, Silenced Pistol, Minigun or whatever, to defend themselves and/or the home, but they are not the registered owner of the NFA item, and you are not around. What kind of trouble would that cause? Would it be no big deal? I know people say don't use NFA for defense cause the jury will think you're a ninja assassin and the cops will play with it in the evidence room and ruin it but... aside from that what are the legal ramifications?