1931
750.234f Possession of firearm by person less than 18 years of age; exceptions; violation as misdemeanor; penalty.
Sec. 234f.
(1) Except as provided in subsection (2), an individual less than 18 years of age shall not possess a firearm in public except under the direct supervision of an individual 18 years of age or older.
You proved my point I guess; though conveniently didn’t list the exceptions.