The system used in Norway-similar to NZ I believe. Your guns arent licensed-YOU are licensed and if you get pulled over having had a drink,
I know somebody who lost their shotgun licence through drink driving, second offence. Told to reapply after three years, but never did.
I know somebody who lost his shotgun licence through a punch up over a parking space in a fast food car park, all on CCTV.
Yet if the reports are correct this individual had his gun returned after an anger management course.