<Li> "Restricting the possession of firearms in any stadium or convention center, operated by a city, town, county, except that such restrictions shall not apply to concealed pistol license holders, law enforcement officers, or any showing, demonstration, or lecture involving the exhibition of firearms ." </Li> <Li> "Restricting the areas in their respective jurisdictions in which firearms may be sold ." </Li> <P> There are no age restrictions on the possession of firearms and some people are prohibited from possessing firearms due to certain criminal convictions or who are released on bond or their own recognizance pending trial for certain criminal charges . Since July 1, 1994, machine guns, short - barreled shotguns, and any parts thereof are prohibited . Suppressors and short - barreled rifles may be possessed and used in accordance with federal law . Pistols transferred through an F.F.L. dealer must be registered with Washington State D.O.L. </P> <P> There is a rather long list of places where the possession or storage of firearms or ammunition is prohibited or otherwise restricted . Statutory law prohibits firearms in places such as areas of buildings used for court proceedings, certain areas of public mental health facilities, establishments which serve alcohol and are off - limits to persons under 21 years of age, restricted - access areas of commercial airports, State correctional facilities, and outdoor music festivals . Administrative law prohibits or otherwise restricts the possession or storage of firearms in places such as certain schools, premises of the Office of Administrative Hearings, child care centers, horse races, near certain explosive materials, and certain shelters for respite or youths . See the Washington' infobox' or one of this section's referenced documents for the complete list as well as where exceptions apply for those who hold concealed pistol licenses . </P>

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