I will leave the wild speculation to you and I will wait for facts.
That’s fine, but there is nothing about being mentally ill that means a weapon is not a Fast and Furious weapon.
Nor does mentally ill mean a book he has in his possession must come from a bookstore and not from a library.
There is no relationship between being mentally ill and where your weapons must come from.
Therefore, it’s a fair question to ask if it’s a Fast & Furious AK47.