The bills would ban semi-automatic rifles and certain ammunition and firearms accessories within city limits.
City Council introduced the bills last month in the wake of the October massacre at Tree of Life synagogue, where 11 worshippers were killed.
Gun rights activists are decrying the proposals, contending the restrictions would violate Pennsylvania law.
State law prohibits municipalities from regulating firearms.
The protest was organized by Justin Dillon, the founder of the advocacy group Open Carry Pennsylvania.
Speakers include Kaitlin Bennett, who drew attention when she posted photos of herself on the Kent State University campus with an AR-10 and a mortar board reading “Come and take it.”