You do realize that, generally, in those countries gun control is far stricter, take the UK where whole classes of guns are completely illegal, other can only be kept and shot at approved facilities. So if you've jumped through the hoops, (stricter than any NFA checks), and managed to qualify to own a gun having a suppressor is no big deal.
I know and didn’t say impose more gun control. Suppressor are considered helpful to reduce noise pollution there. That’s all I was saying. Why not have the same reasoning here?


