Someone should dig into who this is coming from and why. The answers are usually either (a) they got paid to do it by a company selling the tech, which appears not to be the case here, or (b) they went insane on social media.
(can't confirm this personally, but it seems from other comments that it's perfectly feasible to just drive out of New York State and buy a gun somewhere else in the gun-owning US? And this is quite likely where all the guns used in existing NY crime come from?)
I would also note that the Shinzo Abe doohickey wasn't 3D-printed.
Every part except the firing pin is now printable (you can print quite strong carbon-fiber reinforced parts at home). The firing pin can be made from a nail or similar piece of metal.
> You can't get bullets
Bullets are mostly easy enough to make. One of my neighbors growing up was a competitive shooter who competed nationally and internationally. He manufactured his own ammo in his home shop, using tools any boomer dad had access to, like a lathe, presses and very accurate scales. He didn't really pay any more for ammo than we did per round. The only reason criminals don't do it is because buying factory ammo on the gray and black market is so easy.
The most difficult part to make would probably be the primers, but that still isn't difficult for any chemist.
Here's a (old) video of someone in Europe making their own ammo at home: https://www.youtube.com/watch?v=J5Cx4idIIe0
Even in police force or army, they literally count every single bullet, and for every fired bullet, it must be explained in detail.
Maybe that's why we have low gun-related crime here.