Md. Code, Pub. Safety § 5-146

(a) A dealer or any other person who sells or transfers a regulated firearm shall notify the purchaser or recipient of the regulated firearm at the time of purchase or transfer that the purchaser or recipient is required to report a lost or stolen regulated firearm to the local law enforcement agency as required under subsection (b) of this section. (b) If a regulated firearm is lost or stolen, the owner of the regulated firearm shall report the loss or theft to the local law enforcement agency within 72 hours after the owner first discovers the loss or theft. (c) On receipt of a report of a lost or stolen regulated firearm, a local law enforcement agency shall report to the Secretary and enter into the National Crime Information Center (NCIC) database, to the extent known, the caliber, make, model, manufacturer, and serial number of the regulated firearm and any other distinguishing number or identification mark on the regulated firearm. (d) (1) A knowing and willful first–time violation of this section is a civil offense punishable by a fine not exceeding $500. (2) A person who knowingly and willfully violates this section for a second or subsequent time is guilty of a misdemeanor and on conviction is subject to imprisonment not exceeding 90 days or a fine not exceeding $500 or both. (e) The imposition of a civil or criminal penalty under this section does not preclude the pursuit of any other civil remedy or criminal prosecution authorized by law.