I'm not quite clear on this. It has been resolved then? The gun was returned? If so, that's great. Good on the person(s) for coming clean. Is still however lay out appropriate punishments. He/they would be banned for life, or at least a few years, their personal info and image would be passed over to other community leaders as a "high risk" person, and I'd charge him. He may not get jail time, but he'd have a criminal record, could not travel to certain places, like the US, could never be a police officer or have a job that involved sensitive peoples. Penance must be just, and justice must be firm, to serve as an example to others. Also, a face to face apology to the victim and the local community.
“REALITY IS LIKE A STONE. TO MANY IT’S HARD AND COLD, THEY CAN’T HUG IT OR EAT IT, IT ONLY FRUSTERATES THEM AND DOESN’T DO THEM MUCH GOOD. TO OTHERS IT’S STRONG AND DEPENDABLE, YOU CAN BUILD WITH IT, BUILD UPON IT, OR WORK WITH IT, ALSO USE IT TO SMASH PEOPLE IN THE FACE.”