A nothingburger looking for something to regulate.
Full auto conversion switches, auto sears, and the like are already illegal, except in highly constrained circumstances (It's okay if the ATF gimmicks your gun while in evidence, but don't try that at home, folks).
If the effort was concentrated on getting criminals off the streets (including fresh 'imports'), maybe it would have more effect. Most of these incidents involve either (lately) disaffected trans types or people from certain urban demographics. Blanket rules for people who are not part of the problem solve nothing, and an infringement is an infringement is an infringement, and forbidden by the Second Amendment.