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).

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

You generally won’t find 3D-printed guns for sale in a traditional store or online marketplace like eBay or Amazon.

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?

These are often "single-shot" or low-durability items compared to traditional steel or aluminum firearms.

3D printing a pressure-bearing device is inherently dangerous.

People often buy "parts kits" (barrels, triggers, slides) which are not legally firearms, and then print the "frame" or "receiver" themselves to house those parts. 4. Safety Risks