Back in the UK
4-12 months to process an application to own a shotgun (not a rifle and handguns are pretty much outright banned), requiring a police interview, background checks from a referee, doctors report into your mental health and an inspection of your physical gun storage security.
It's even more rigourous to own a rifled weapon (firearm) and in Scotland you even need a licence for a low powered air weapon (high power count as firearms proper).
I still think we're doing it right.