>>520788822
FFL isn't a big deal no. Gov actually loves it because it's less "ghost gun" on the streets.
>But you don't need any of that to legally make a gun in America according to the ATF&E, they actually used to have a FAQ on their website explaining the few step you needed to take when making your own guns to remain legal.
There's really not much to do to remain legal, follow some simple guidelines and most guns already fit the bill.
https://www.atf.gov/firearms/qa/does-individual-need-license-make-firearm-personal-use

>>520789007
While true, it misses the most important factor. Learning to machine is infinitely more useful and profitable for the user as they can make things a 3d printer cannot (non-firearm related metal parts) and the user can find a local machine shop and apply. Which is a real tangable skill unlike pressing print. By your same claim, you could argue a metal 3d printer is cheaper than a full machining setup. Also GhostGunner machine exists which isn't much more and actually beats some printers in price, see picrel for Ghost Gunner in >>520785187. plus there are several kinds of machining tools like picrel for very cheap like less than 800 bucks you can manufacture many parts of a firearm on if you upgrade it's spindle to a router/actual vfd spindle.