The easiest sell would be to take the FFLs out of the loop and let a private seller contact the CBI directly. The $10 fee legitimizes that contact especially if they require a traceable payment method. You give the DL of the buyer to them, they run it and give an approval or denial and you're done. They know who called, they know who got the gun and all aspects of the law should be satisfied. Of course I'd rather see everything they passed reversed but that rarely happens.