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