Onr thing that most people don't know is that in states where you only have to fill out the 4473 for sales, the form does not leave the FFL until he closes business for good. Then they have to be sent to the ATF for permanent storage. Unless there needs to be an inquiry about a particular sale for reason, the info on the 4473s goes no further than where you bought it. Now, in some states where another form is needed for handgun sales, like here in Pa., there is another record that is in the hands of some authority. Still, it is supposed to be illegal to have registries of firearm sales. When states have additional official records of firearm sales of any kind, like here, you begin to wonder about that.
They won't give us dealers access to stolen firearm databases so we can do the right thing, but have additional records of legitimate purchases. Go figure.