To quote the state web site, the act "regulates the .50 BMG rifles in essentially the same manner as assault weapons.
[3] Limited exceptions are granted for exhibitions, displays, and education projects sponsored by law enforcement or government agencies.
[4] As a result of the ban, the Barrett Firearms Company announced it would no longer sell to or service any of its rifles in the possession of any California government agency.
[5] A 1999 Justice Department Office of Special Investigations briefing on .50 caliber rifle crime identified several instances of the .50 BMG being involved in criminal activities.
No .50 BMG rifles were reported recovered after the ATF siege at Waco The .510 DTC Europ has since been introduced to take advantage of the highly specific language used in the act.