; and (2) assist law enforcement in the apprehension of owners or users of qualifying firearms used in criminal activity. (b) Maximum interval between issuance of proposed and final regulation Not later than 120 days after the date on which the Attorney General issues a proposed regulation under subsection (a) with respect to a matter, the Attorney General shall issue a final regulation with respect to the matter. 403. Inspections In order to determine compliance with this Act, the amendments made by this Act, and the regulations and orders issued under this Act, the Attorney General may, during regular business hours, enter any place in which firearms or firearm products are manufactured, stored, or held, for distribution in commerce, and inspect those areas where the products are manufactured, stored, or held. 404. Orders The Attorney General may issue an order prohibiting the sale or transfer of any firearm that the Attorney General finds has been transferred or distributed in violation of this Act, an amendment made by this Act, or a regulation issued under this Act. 405. Injunctive enforcement The Attorney General may bring an action to restrain any violation of this Act or an amendment made by this Act in the district court of the United States for any district in which— (1) the violation occurs; or (2) the defendant is found or transacts business. V FIREARM INJURY INFORMATION AND RESEARCH 501. Duties of the Attorney General (a) In general The Attorney General shall— (1) establish and maintain a firearm injury information clearinghouse to collect, investigate, analyze, and disseminate data and information relating to the causes and prevention of death and injury associated with firearms; (2) conduct continuing studies and investigations of firearm-related deaths and injuries; (3) collect and maintain current production and sales figures for each licensed manufacturer