Not to mention criminals and crazy people do carry guns. The whole thing might as well ended with "three 6 feet-tall construction workers with black belts in jujitsu ended up dead shot by a 140 pounds stalker with semi-automatic gun"
In Scotland?
(Knives, OK that's more likely; we're no longer the stabbing capital of the world but it's still a problem. But not guns. Even airguns are now restricted.)
If you're under 18, you have to be supervised by someone over 21. You can't carry an airgun in public without "a reasonable excuse". There are several kinds of thing you're not allowed to shoot at (which you're not allowed to kill anyway). Convicts aren't allowed to own guns (roughly).
Most of the restrictions are simply the extension to airguns of things that are already forbidden.
[Edit] Looks like the rules are slightly different in Scotland, but not more stringent, as far as I can see.
https://assets.publishing.service.gov.uk/government/uploads/...
Yes I am sure criminals care about guns and airguns being restricted. Definitely will look into possibility of moving to Scotland, considering your criminals are law-abiding citizens.