Gun laws in Maryland  Gun laws in Maryland regulate the sale, possession, and use of firearms and ammunition in the U.S. state of Maryland. The Constitution of Maryland contains no provision protecting the right for individuals to keep and bear arms. The state preempts some local firearm regulations, though local governments may regulate firearms with respect to minors and areas of public assembly. Annapolis, Anne Arundel County, Montgomery County, Gaithersburg, and Baltimore are known to have local firearm regulations. The Constitution of Maryland, Declaration of Rights, Art. The Constitution of the United States, and the Laws made, or which shall be made, in pursuance thereof, and all Treaties made, or which shall be made, under the authority of the United States, are, and shall be the Supreme Law of the State; and the Judges of this State, and all the People of this State, are, and shall be bound thereby; anything in the Constitution or Law of this State to the contrary. Maryland state law currently blocks anyone who has been in a mental facility or has been reported or coded at mentally ill from buying a gun notwithstanding. The Maryland State Police maintain a registry of "regulated firearms" that are allowed to be sold within the state. Residents may only purchase handguns manufactured after January 1, 1985, that are on the approved handguns list from the Maryland Handgun Roster. Until 2016, dealers were required to forward the manufacturer-included shell casing (or one provided by the federally licensed gun shop) in its sealed container to the Department of State Police Crime Laboratory upon sale, rental, or transfer of a "regulated firearm" for inclusion in their ballistics database, known as the Integrated Ballistics Identification System (IBIS). The program was shut down in 2015 due to its ineffectiveness. On April 4, 2013, the Maryland General Assembly approved legislation imposing significant new restrictions on gun ownership. The bills ban the sale of certain semi-automatic firearms that they define as assault weapons, limit magazine capacity to ten rounds, require that handgun purchasers be fingerprinted and pass a training class in order to obtain a handgun license, and bar persons who have been involuntarily committed to a mental health institution from possessing firearms. Martin O'Malley Governor at the time, signed the legislation into law on May 16, 2013. Regarding 10 round magazine limits for rifles purchased in Maryland, standard 30 round magazines may be purchased outside Maryland and brought into the state for personal use. Those standard magazines may not be transferred, given, sold or manufactured inside Maryland.