They have all the information they need from the 4473 forms and the credit card companies. If for some reason that wasn't enough, they would force the company that sold it to you or the FFL that completed the transaction to go bankrupt or lose their FFL license, which would then by law require that entity to surrender its "Bound Book" with all the details of all transactions to the AFT. Yes, that is one of the key reasons why they are persecuting the FFLs so much now. To get those Bound Books.
They have all the information they need from the 4473 forms and the credit card companies. If for some reason that wasn't enough, they would force the company that sold it to you or the FFL that completed the transaction to go bankrupt or lose their FFL license, which would then by law require that entity to surrender its "Bound Book" with all the details of all transactions to the AFT. Yes, that is one of the key reasons why they are persecuting the FFLs so much now. To get those Bound Books.