I don’t think there’s an age limit for hunting in my country, either. I did have a couple of shotguns for the purpose.
To get a license for them I had to pass an exam identifying all game, even by silhouette. And I had to pop in for a quick interview at the police station before applying for a weapon’s license.
I feel like those hoops would filter out 95% of those looking to get weapons fpr illicit purposes. In the case of a handgun, you’d need to show a long-lasting interest in either range shooting or hunting game that hide in dens.