I think that they will probably start a database of all gun transactions. The next step is there will be a sales tax that will have to be paid. Then the Federal Government will find some way to add another tax.If I bought the gun from you and we did the transaction at SSP they would have called it in exactly the same way and received the exact same proceed, delay, or deny.
And if the answer was proceed the feds would know a firearm changed hands just the same.
Like I said, I don't see how it's different except that I have to pay for service provided by SSP to conduct the check and retain the 4473.