On receipt of a firearm application, a licensee or designated law enforcement agency shall promptly forward one copy of it to the Secretary by electronic means approved by the Secretary. The copy of the firearm application forwarded to the Secretary shall contain the name, address, and signature of the prospective seller, lessor, or transferor. The prospective seller, lessor, or transferor shall keep one copy of the firearm application for not less than 3 years. The firearm applicant is entitled to a copy of the firearm application. The licensee or designated law enforcement agency shall forward the $10 application fee with the firearm application to the Secretary.