AFAIK, the only laws the police are required to enforce are domestic abuse laws.
The rest are subject to discretion.
If I'm wrong a LEO will be along shortly to correct me.
The problem is the paper trail. Any auditor would have to turn a blind eye, when going through an FFL's book.
I do not think they will be that permissive. The evidence they need to arrest all parties is right there in front of them on a silver platter.