[Vecr]

That's not correct, if you want a rifled barrel, you do need to electro-machine it, and you might want some airsoft parts, but everything else is bolts and printed parts.

[mhh__]

What? Unless things have improved a lot since I last checked all the designs for fully 3D printed guns I could find were one used affairs.

[rayhendricks]

3D printed firearms have drastically improved in the last couple years. Here is a 3D printed glock https://ctrlpew.com/freemans-g26-3d-printable-glock-frame-di..., there are also 3D printed ar/ak lowers.