Sites like DEFCAD or Odysee host the blueprints. Note that the State Department has previously fought to keep these files offline under export control laws (ITAR).

Any person or business selling firearms for profit must have a Federal Firearms License (FFL) .

In the United States, federal law generally allows individuals to manufacture firearms for personal use, provided they aren't prohibited from owning guns (e.g., due to a felony). However, many states—like —have passed strict laws specifically targeting "ghost guns" or 3D-printed firearms, often requiring you to obtain a serial number from the state before you even start printing. 2. Can You "Buy" One?

Most people in this community don't "buy" the gun; they buy a (like an Ender 3 or Bamboo Lab) and download "CAD" files.

This subject is a bit of a legal and ethical minefield, depending heavily on where you live. If you’re looking into this, here’s a breakdown of what the landscape actually looks like right now: 1. The Legal Reality

It is illegal to manufacture or possess any firearm that cannot be detected by a walk-through metal detector. This means a 100% plastic gun is a federal felony; they must contain a certain amount of steel. 3. The DIY Route vs. Buying

Under recent ATF rules, "frames and receivers" (the part of the gun that makes it a legal firearm) must be serialized if they are sold or distributed by a licensed dealer.