Waffen sind dort nur einem bestimmen Personenkreis vorbehalten und müssen genau registriert sein - genau das war bei dieser Frau, einer offenbar erfolgreuchen Sportschützin der Fall.
siehe auch unter engl.Wiki:
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en.wikipedia.org]
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The 1994 Violent Crime Control and Law Enforcement Act enacted the now-defunct Federal Assault Weapons Ban, which banned the purchase, sale, or transfer of any weapon specifically named in the act, other weapons with a certain number of "defining features", and detachable magazines capable of holding more than 10 rounds of ammunition, that had been manufactured after the beginning date of the ban. The Assault Weapons Ban expired in 2004, but H.R. 6257 introduced June 12, 2008 sought to re-instate the ban indefinitely as well as to expand the list of banned weapons. The bill ultimately died in committee. New York, California, Massachusetts, Hawaii, Connecticut, and New Jersey and several municipalities have codified some provisions of the expired Federal ban into State and local laws.