Tucson officials have approved restrictions on gun sales at the city's convention center.
The Arizona Daily Star reports the City Council voted Wednesday to ban any weapon capable of firing 10 rounds or more from being sold at the venue.
The unanimous decision was made with several victims of the city's January 2011 mass shooting in attendance.
Former U.S. Rep. Ron Barber, who was among those injured in the shooting, thanked councilors for their action and faulted Congress for failing to enact gun control legislation.
The new regulations for the Tucson Convention Center could face a legal battle when a new state law takes effect next month. The law prohibits cities and municipalities from enacting restrictions on gun sales that are tougher than state laws.