Earlier quoted context omitted.
> You basically just need a metal tube, and well... a pipe from home depot does that much better than trying to 3d print something much less reliable. Why would you buy a pipe at Home Depot? A gun barrel is not a firearm, and is not required to be registered or serialized. You can drive to Arizona or Nevada and buy an actual barrel, with rifling, manufactured to meet well-known specifications, without showing an ID.…
Like everything in the United States, it’s actually gun manufacturers that want to clamp down on this cottage industry which threatens their profits. I don’t buy for a second that this is some gun control attempt.
The gun lobby has a long history of trying to ban low cost market entrants.