Leonardtown, MD might be able get into the action also
http://ecode360.com/LE0947
§ 72-3 Restrictions; exceptions.
A. No person shall have in his possession, except within his own domicile, or carry or use within the corporate limits of Leonardtown a revolver or pistol of any description, shotgun or rifle which may be used for the explosion of cartridges or any air gun, B-B gun, gas-operated or spring gun or any instrument, toy or weapon commonly known as a "peashooter," "slingshot" or "beany" or any bow made for the purpose of throwing or projecting missiles of any kind by any means whatsoever, whether such instrument is called by any name set forth above or by any other name.
B. This prohibition shall not:
(1) Apply to licensed shooting galleries or on private grounds or premises under circumstances when such instrument can be fired, discharged or operated in such a manner as not to endanger persons or property and also in such manner as to prevent the projectiles from traversing any grounds or space outside the limits of such gallery, grounds or residence; and provided, further, that nothing herein contained shall be construed to prevent the concealed carrying of any type of gun whatsoever when unloaded and properly cased to or from any range or gallery or to or from an area where hunting is allowed by law.
(2) Forbid United States Marshals, sheriffs, constables and their deputies and any regular, special or ex officio police officer or any other law enforcement officer from carrying or wearing, while on duty, such weapons as shall be necessary in the proper discharge of their duties.
http://ecode360.com/LE0947