From 1994 to 2004 the USA had a national “Assault Weapons Ban”. Firearms and magazines made before September 13, 1994 (the day the law went into effect) were exempt from the law.
These grandfathered items are commonly know as “pre-ban” firearms/magazines.
The federal law expired in 2004. In 1998, the Massachusetts legislature voted to keep the assault weapons ban in effect permanently in Massachusetts.
