I would most definitely like for US aviation to be influenced precisely zero by EU practice. So Gertrude, in that respect you are absolutely correct
You may have the gun thing wrong though - I support gun ownership as a last line of defense against the Federal Government, should it expand beyond the limits of the constitution and excessively influence local law. Just my POV and that of the guys that set that paradigm up. Not needed for personal defense where I go, although to each his own.
Think I'll run now an go buy some approved aircraft bolts, commercial off the shelf at the shop across the airport

I'm sure glad I don't need the metric equivalent.
PS I also hold EU citizenship and spend many weeks per year there, four trips last year. The food and history is great.