Please go to Japan and obtain a gun illegally as proof of this claim.
" I remember my gun nut friends all had illegal assault rifles during the Clinton ban."
Bad regulation is proof that all regulation doesn't work! ... right?
Nevermind the fact that we have millions more guns in our country -- making guns illegal after they've hit such a penetration level would be impossible.
"I really can't see"
The point I was making was pretty obvious but I'll repeat it here again: it is actually very possible to make it hard to obtain a gun. Japan is hardly the only exhibit.