Stop disrupting Darwinism?
Sorry, I can't bring myself to care if their house gets raided or even if the kid gets shot. It's a parenting call. If something happens its not on us.
I got my first airgun when I was about 10. I never paraded it in public or did anything boneheaded with it, entirely because I had parental supervision and had been told what to do/not do. Lets hope these parents do as good a job. Otherwise, chalk it up to natural selection.