The only reason they need this list of existing guns is because the rules they are writing would otherwise make mere parts considered guns. All without changing the law, by edict of the DOJ. Of course they could wait 5 years then revoke this "exception" and apply the rule to all guns and parts out there. By law the AR15 lower is not a gun, and the ATF has dropped cases against people who argued that in court. This will always be the case until the law is changed, I expect there will be a lot of pushback from manufacturers and importers over this proposal.I have not read the entire 115 page document, but look at this page: View attachment 879194