@ phoenixat44 Re: Title goes here
I think you missed Alice Dobb's point.
Outside of the plastic printers, there are metal 3D printers who can produce metal components (think aerospace industrial grade).
One company did produce a 1911 made from such a printer. (Not sure how many rounds were actually fired.) They did it just to show that it can be done and that you can produce parts that can withstand the pressure.
Of course the company didn't say how much this gun costs, other than one could purchase several regular guns combined, far cheaper.
Where the 3D printing can be interesting isn't producing the gun itself, but in producing the silencer/suppressor. (Again metal printer. Not plastic)