I don’t get the hype about 3D printed “ghost guns”. What do they use for a barrel? No materials that I can use hold up to that heat or pressure.
If it’s a metal barrel and striker in a plastic body, how is that not a zip gun?
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@MookyTroubadour I think the concern is that you can use metal 3d printing to manufacture the lower receiver, which is the regulated part. You can buy the barrel.