Just to be clear, I don't think this is useful or good legislation. While the idea that the state is a shady body that's out to fleece an honest and unsuspecting peoples is a great story beat, I just don't think it's particularly accurate to reality and we shouldn't pretend that it is just because it sounds good in a HN comment.
Well over a decade actually https://en.wikipedia.org/wiki/Liberator_(gun) but of course just ignore the context of the parent comment about what's legally considered a firearm.