That would be incorrect...
The ban did work, and a number of studies lay that out.
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University of Massachusetts researcher Louis Klarevas, author of the book “Rampage Nation,” found that the number of gun massacres dropped by 37 percent and the number of gun massacre deaths fell by 43 percent while the ban was in effect compared to the previous decade. After the ban lapsed in 2004, those numbers dramatically rose – a 183 percent increase in massacres and a 239 percent increase in massacre deaths.
-A 2019
study in the Journal of Trauma and Acute Surgery found that, based on data from 1981 to 2017, there were fewer mass-shooting deaths while the ban was in place.
-A 2017
study in the Journal of Urban Health observed that law enforcement recovery of assault weapons fell nationwide while the ban was in place, indicating that they were used in fewer crimes, but increased after the ban expired.
-A 2004
University of Pennsylvania study conducted for the Justice Department explained that the use of assault weapons in crime declined by 70 percent nine years after the Assault Weapons Ban took effect.
Gun massacres fell 37 percent while ban was in place, rose by 183 percent after ban...
www.judiciary.senate.gov
And correlation also does not imply that there is no causation.