I could see if you’re really into guns and you want to teach your kid the importance of gun safety, etc. But that firearm should 110% be under lock and key so that the child has no way to access it outside of parental supervision. This sounds like gross negligence, and a disturbing trend of parents for whatever reason buying troubled youth firearms in what I think most would consider counter to good judgement.
Edit - Ugh… It’s even worse after reading this part…
The timeline the teen’s father provided to authorities would put the gun purchase months after authorities first contacted Gray and his family to investigate school shooting threats made online.