To prohibit the importation of semiautomatic assault weapons, large capacity ammunition feeding devices, and certain accessories, to provide for the public safety of the citizens of the United States, and for other purposes.

Prohibits the importation into the United States of any semiautomatic assault weapon, large capacity ammunition feeding devices, or assault weapon accessories. Makes an exception for the importation of such articles under authority of the United States, by a U.S. department or agency, or by a State or local department or agency.