Assault weapons : a view from the front lines : hearing before the Committee on the Judiciary, United States Senate, One Hundred Third Congress, first session on S. 639, a bill to make unlawful the possession of certain assault weapons, to establish a federal penalty for drive-by shootings, and for other purposes and S. 653, a bill to prohibit the transfer or possession of semiautomatic assault weapons, and for other purposes, August 3, 1993.