To reinstate the repealed criminal provisions relating to assault weapons and large capacity ammunition feeding devices.

H.R. 5099 was a bill introduced in 2004 that sought to reinstate the federal ban on assault weapons and large-capacity ammunition magazines, which had expired just days before the bill's introduction. If passed, the legislation would have made it illegal to manufacture, transfer, or possess certain semi-automatic firearms and ammunition feeding devices capable of holding more than 10 rounds. For everyday citizens, this would have restricted the purchase of specific military-style firearms and high-capacity magazines while generally exempting those already legally owned before the ban took effect. The bill did not advance past the committee stage and never became law.