Perhaps a trade is possible:
gun show backgroundchecks for individual sellers (with 24-hour government response required for first day sales)
in exchange for
no legally required background checks or other federal or state impediments at a single seller’s establishment if you the buyer apparently already own a gun of the same class (pistol, single-shot rifle, revolver, semi-automatic).
What is the point of a background check for the purchase of a revolver at a dealer’s store if you already have a revolver in hand when you first walk in the door?
Discount double check? How about we compromise and just go with the 2nd Amendment and the definition of infringe. Works for me.