Yes, they maintain a "database" on you that cannot be seen, reviewed or updated. No, it's not "beyond the ATF required files." It is the ATF-required 4473 files. As for the notification--it's on the form 4473 itself. This is from page three of the Form 4473:As I said before, I understand why they did that. My complaint is that they don't make it clear up front that they will keep a database on you, and wont let you see it, review it, etc. And I didn't put this up her to complain; rather to let people know that who knows what they have back there on file about you beyond the ATF required files. Such as a gun registry beyond what is required? So yeah as I said, I went elsewhere, learned my lesson, and am trying to pass it on.
FORMS 4473 FOR DENIED/CANCELLED TRANSFERS MUST BE RETAINED:
If the transfer of a firearm is denied/cancelled by NICS, or if for any other reason the transfer is not completed after a NICS check is initiated, the licensee must retain the ATF Form 4473 in his/her records for at least 5 years.