To Above - Any full auto weapon made after 1986 cannot be legally transferred - NFA Act of 1986
I see no reason to legalize bumpstocks - they do make -effectively- a full auto weapon - .
Fact- A legally transferred NFA weapon has never been used in a crime in the USA - only illegal weapons
Illegally converting a semi - to FA weapon is a Federal crime- BATFE likes 10-20 in Leavenworth prison.
The mental health system is a mess - it would be good to be able to keep weapons from the seriously mentally ill - but that system has many flaws.
Criminals do obtain weapons in violation of the law. Via illegal transfers. I do not have a perfect answer.
My humble opinion
Bump fire stocks can be placed on a few common weapon platforms such as the AR or AK families. They can achieve rates of fire between 400 and 500 rounds per minute depending on the gun.
This is comparable to FA weapons.
Glad we have debate and not name-calling here.
Holding weapons is a privilege and responsibility - Hold it safely!