[20171010]IN10801_枪械控制：“Bump Fire”库存.pdf

CRS INSIGHT Prepared for Members and Committees of Congress INSIGHTINSIGHTi i Gun Control: “Bump-Fire” Stocks William J. Krouse Specialist in Domestic Security and Crime Policy October 10, 2017 Following the October 1, 2017, Las Vegas, NV, attack, there has been significant congressional interest in “bump-fire” stocks that can assist a person in firing a semiautomatic rifle repeatedly, sometimes at rates usually associated with fully automatic machineguns. It has been reported that the assailant in this attack had 12 semiautomatic rifles outfitted with “bump-fire” stocks. The terms “bump-fire” and “slide-fire” are often used interchangeably. Under the Gun Control Act of 1968 (GCA), a semiautomatic rifle is defined as: Any repeating rifle which utilizes a portion of the energy of a firing cartridge to extract the fired cartridge case and chamber the next round, and which requires a separate pull of the trigger to fire each cartridge (18 U.S.C. 921(a)(28). Semiautomatic hunting rifles have been available to civilians in the United States since the 1890s. Under the 1934 National Firearms Act (NFA), a machinegun is defined as, among other things, Any weapon which shoots, is designed to