@nhmemorymaker sorry I didn’t fully answer your question…
Firearms licences need to be renewed every 1, 2 or 5 years (this would depend on the specific purpose of owning the gun).
To reapply, you need to provide evidence that you have continue to satisfy the ‘genuine reason’ requirement to own the weapon (e.g. provide new duck hunting licence).
If criminally convicted of something, the licence will be revoked. Also, my brother had a mental health crisis and was ‘sectioned’ (involuntary admission to psychiatric hospital, if police think you may be a danger to yourself or others) - police can confiscate your guns.
Licence holders must keep the gun ‘safely secured’ at their registered address, anytime it’s not being used for the specific purpose allowed. Guns and ammunition must be kept in separate, locked safes at home address.
Even police officers are required to check-in their firearms overnight at the police station when not on active duty. Each weapon is weighed/checked to confirm if any bullets missing, which would require justification for where they are or why they were fired on duty.