"Well, more of the question of, taking a semi-auto rifle, and just buying the parts to change it to full auto. As well as some FB grenades as well. " When I made that statement my wording was quite off, and I was not referring to current semi-auto rifle. I know far well that building your own personal un-registered new model assault rifle to be a full auto is illegal. My questioning on that was, if it was possible to take a pre-ban rifle and go through the ATF to make the conversion by using their registration, gunsmithing requirements, etc..? Granted this is a question to ask the ATF, but for ease of access I figured there are probably LEOs and maybe some Fed LE on here that might have an insight. Sorry for sounding very uneducated on the other thread, it was a quick response and didn't think to type out the details of the thought.