The Chicago Police Department has pulled more than 4,200 illegal guns off the street since the start of the year, with nearly 100 confiscated over this past weekend.
According to the department, there were a "handful" of semi-automatic firearms confiscated by police over the weekend.
"These guns are built for a battlefield, and they have no business on our streets," reads a statement from Police Supt. Eddie Johnson.
News of the gun confiscations comes as a Chicago alderman and community groups press for stronger curbs on assault weapons.
South Side Ald. Raymond Lopez (15th) and advocates held a press conference at City Hall Tuesday afternoon "to demand urgent action in response to the recent shootings using semi-automatic assault weapons in the Back of the Yards neighborhood."
Over the weekend, 13 people were killed in gun violence in the city, including a man who was shot in the Back of the Yards by someone using an assault rifle.
At Wednesday's Chicago City Council meeting, Lopez plans to formally request council hearings on "limiting the availability of assault weapons on Chicago's streets."