"Q: Must a dealer record firearms received on consignment?
Yes. Firearms received for sale on consignment must be entered in the dealer’s “bound book.”
Sales of the firearms are handled in the same manner as other firearm sales. Return of the remaining firearms by the licensee to the consignor is entered in the dealer’s disposition record. An ATF Form 4473 and a NICS check must be completed." (emphasis added)
Returning a gun after gunsmithing is different legally. No NICS check is required.
