PITTSBURGH — The Pittsburgh City Council gave final approval Tuesday to gun restrictions proposed after last year’s synagogue massacre, inviting a legal challenge by gun-rights activists who have long tangled with the city over firearms.

After taking an initial vote last week, the all-Democratic council voted 6-3 to send the legislation to the desk of Democratic Mayor Bill Peduto, who is expected to sign the bills into law.

A handful of pro-gun rights activists jeered and booed the vote, while two dozen supporters gave council a standing ovation.

“We’re happy to take a stand,” Councilman Corey O’Connor, who spearheaded the effort, said afterward. “It’s going to be a difficult battle, but we are willing to fight it. . People are starting to change their minds and be more open to some sort of gun control.”

The legislation places restrictions on military-style assault weapons like the AR-15 rifle that authorities say was used in the Oct. 27 rampage at Tree of Life Synagogue that killed 11 and wounded seven. It also bans most uses of armor-piercing ammunition and high-capacity magazines, and allows the temporary seizure of guns from people who are determined to be a danger to themselves or others.

State law forbids municipalities from regulating guns, and pro-gun advocates say they’ll sue to block the laws from taking effect — and file private criminal complaints against council and Peduto.

The three-bill package was weakened ahead of the vote in an effort to make it more likely to survive a court challenge. The revised measure bars the “use” of assault weapons in public places.