NRA stands for Negotiate Rights Away. I'm not a member or a fan. I KNOW federal law. you apparently do not.
https://www.law.cornell.edu/uscode/text/18/922
18 U.S.C. § 922(t)(1)
(1) Beginning on the date that is 30 days after the Attorney General notifies licensees under section 103(d) of the Brady Handgun Violence Prevention Act that the national instant criminal background check system is established, a licensed importer, licensed manufacturer, or licensed dealer shall not transfer a firearm to any other person who is not licensed under this chapter, unless—
(A) before the completion of the transfer, the licensee contacts the national instant criminal background check system established under section 103 of that Act;
(B)
(i) the system provides the licensee with a unique identification number; or
(ii)
3 business days (meaning a day on which State offices are open) have elapsed since the licensee contacted the system, and the system has not notified the licensee that the receipt of a firearm by such other person would violate subsection (g) or
of this section; and