NY bill would require a criminal history background check for the purchase of a 3D printer::Requires a criminal history background check for the purchase of a three-dimensional printer capable of creating firearms; prohibits sale to a person who would be disqualified on the basis of criminal history from being granted a license to possess a firearm.
All of the answers to these questions are easy, and they all begin with a G.
G-code answers most of your technical concerns.
Google could have helped you find your other answers.
And the Ghost Gunner is what I found:
https://ghostgunner.net/product/ghost-gunner-3-deposit/
Why so incredulous about something that is obviously possible?
What grade and type of metal is required for a gun? GCode.
Best of luck with your gun.
I’m aware it’s possible to CNC gun parts and have never claimed otherwise. But isn’t it just fascinating how all the people insisting its how easy and cheap it is have never actually machined anything?