The Supreme Court has ruled 7-2 that ghost gun kits can be regulated like traditional firearms. The decision maintains requirements for serial numbers and background checks on parts used to build homemade weapons.

One case involved Minnesota's request to reinstate its ban on issuing gun-carry permits to individuals aged 18 to 20, which a lower court had struck down. The other challenged a University of Michigan policy prohibiting firearms on campus. In both instances, the justices opted not to hear the appeals, and no dissents were recorded.

The Supreme Court declined to get involved in the ongoing debate about age restrictions for weapons, skirting a debate about limiting guns for 18-20 year olds.