Sales, Rentals, and Transfers. A sale, rental, or transfer of a regulated firearm shall be reported to the Firearms Registration Section within 7 days after the completed sale. A dealer or person who sells, rents, or transfers a regulated firearm shall submit notification of the completed transaction to the Firearms Registration Section in the manner prescribed by the Secretary. The notification shall contain an identifying description of the regulated firearm, including its caliber, make, model, manufacturer’s serial number, and any other special or peculiar characteristic or marking by which the firearm may be identified. A dealer shall submit to the Firearms Registration Section, with the proper notification, applications held by the dealer that have been disapproved by the Secretary. A dealer shall submit to the Firearms Registration Section, with the proper notification, applications held by the dealer that have expired pursuant to the 90-day limit of Regulation .19 of this chapter. The Secretary shall maintain a permanent record of notifications received of completed sales, rentals, and transfers of regulated firearms in the State.