At some point you'd have to start understanding that not complying is the cause of your problems...
How do you make the adamantly noncompliant comply? You can ask nicely, you can threaten, you can stomp your feet, and if that doesn't work...then what?
The point about gun control is that it's not owning the gun, it's _using_ the gun. There'd be additional penalties if you shot someone!
Sure you can, and we do all the time, we lock them in cages.