GFSZA doesn't apply to permit holders and states are not required to enforce Federal law. Your purported "problem" equally applies to the state carry law and  the sidewalks on Lake Otis passing the K-12 schools. Seen an issue there?  No? That's because the GFSZA applies solely to individuals, the state isn't liable for those individuals actions. So if the Feds want to enforce the GFSZA on UAA they'd need to send Fed agents to do so. And, if the weapon is concealed, they'd have a hard time finding justification to search. Further, note the Feds have not allowed a challenge to the GFSZA since it was declared unCon and sent back to Congress. There's a reason for that. It wouldn't hold up a second time.

Nice try though.