Such a garbage bill. You could do more damage with an easier to make home made potato cannon or pipe bomb
https://en.wikipedia.org/wiki/FGC-9
(The law is still silly, but for other reasons.)
An iffy 3d-printed gun using crappy materials can technically work for a few hundred rounds doesn't mean much in a country full of lots of legal guns of all sorts. And while I don't want TdA mass-producing RPGs, but that's not a problem solvable by regulating milling machines.
The problem is some people want total, invasive, inconsistent control over what other people can do, make, and be for ideological reasons rather than rational ones.
It's not fully 3d printed. 3d printed parts are fragile.
So what exactly are they banning?
Why not ban the electrochemical machining instead?
A good site to find and share designs is https://ctrlpew.com
I'm pretty sure the average SUV can do more damage than the average 3D printed firearm.