Someone left a comment that no one should be allowed to touch a gun until they are 21 – for safety.
Gun safety is neither rocket science nor classical music. If even very young and very gifted children can be taught this…
Then almost any child can be taught to keep to treat every gun as a loaded gun, to keep off triggers, and never point a gun at anything they do not intend to destroy.
NB, and three cheers for the little guy!