; and (2) in subsection (g)— (A) in paragraph (8)(C)(ii), by striking or at the end; (B) in paragraph (9), by striking the comma at the end and inserting ; or ; and (C) by inserting after paragraph (9) the following: (10) has been convicted in any court of a misdemeanor crime of stalking, . 11. Prohibition on possession of certain firearm accessories Chapter 44 of title 18, United States Code, as amended by the preceding provisions of this Act, is amended— (1) in section 922, by adding at the end the following: (bb) (1) Except as provided in paragraph (2), on and after the date that is 180 days after the date of enactment of this subsection, it shall be unlawful for any person to import, sell, manufacture, transfer, or possess, in or affecting interstate or foreign commerce, a trigger crank, a bump-fire device, or any part, combination of parts, component, device, attachment, or accessory that is designed or functions to accelerate the rate of fire of a semiautomatic rifle but not convert the semiautomatic rifle into a machinegun. (2) This subsection does not apply with respect to the importation for, manufacture for, sale to, transfer to, or possession by or under the authority of, the United States or any department or agency thereof or a State, or a department, agency, or political subdivision thereof. ; and (2) in section 924(a)(2), by striking , or (o) and inserting (o), or (bb) . 12. Severability If any provision of this Act, an amendment made by this Act, or the application of such provision or amendment to any person or circumstance is held to be unconstitutional, the remainder of this Act, the amendments made by this Act, and the application of such provision or amendment to any person or circumstance shall not be affected thereby.