“the legal age to carry a long gun in Wisconsin is 16, not 18, UNLESS you are talking about a Class 3 (NFA) firearm.
***So... then why didn’t the judge toss that charge at the beginning?”
He probably did not know that himself. The law starts out saying carrying long guns is prohibited for those under 18, and most people stop reading. But there is an exception that clears most people over 16, and that is applied here.
He probably did not know that himself.