Assault Weapon

Studies Find No Evidence That Assault Weapon Bans Reduce Homicide Rates

The studies, data, and examination of the available evidence by scholars suggest that assault weapon bans or buybacks will have little if any effect on rates of violent crime and gun violence. 

https://fee.org/articles/studies-find-no-evidence-that-assault-weapon-bans-reduce-homicide-rates/

Mass shootings with assault weapons constitute a fraction of a percent of gun violence