The US Federal Assault Weapon Ban expired on September 13th, 2004.
In this video Sinistral Rifleman discusses the cultural and industry impacts of the ban, the rifles used during the ban, and what has changed since.
You can find more content from Sinistral Rifleman here on InRangeTV as well on his own website:
InRange is an online video program dedicated to the study of guns, shooting, gun culture, and history. We dispel the myths, promote the good stuff that hasn't gotten the attention it deserves.