This subtitle does not apply to: a firearm that: was manufactured before October 22, 1968; or is an antique firearm; a sale, an offer to sell, a transfer, or a delivery of a firearm or an unfinished frame or receiver to, or possession of a firearm or unfinished frame or receiver by: a federally licensed firearms dealer; a federally licensed firearms manufacturer; or a federally licensed firearms importer; or a transfer or surrender of a firearm or an unfinished frame or receiver to a law enforcement agency.