A relative in rural England kept legal licensed hunting shotguns.
Locked up in his house in a proper security cabinet.

All his adult life he was a responsible and safe gun owner.

Then one day in a mood of dark despair

he sawed the barrels off one of his guns and blasted his heart out.

Luckily he wasn't too angry with anyone else.

So do all legal gun owners need regular psychiatric testing
as a condition of ownership ?