Per Biden's campaign website, he will have so called assault weapons registered as NFA firearms
Regulate possession of existing assault weapons under the National Firearms Act. Currently, the National Firearms Act requires individuals possessing machine-guns, silencers, and short-barreled rifles to undergo a background check and register those weapons with the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF). Due to these requirements, such weapons are rarely used in crimes. As president, Biden will pursue legislation to regulate possession of existing assault weapons under the National Firearms Act.
https://joebiden.com/gunsafety/
Know thy enemy...
Regulate possession of existing assault weapons under the National Firearms Act. Currently, the National Firearms Act requires individuals possessing machine-guns, silencers, and short-barreled rifles to undergo a background check and register those weapons with the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF). Due to these requirements, such weapons are rarely used in crimes. As president, Biden will pursue legislation to regulate possession of existing assault weapons under the National Firearms Act.
https://joebiden.com/gunsafety/
Know thy enemy...