> Some folks claim their guns can shoot thousands of rounds with no issue. For context, I have an AR with a printed lower that I've put ~1k rounds through with

> Some folks claim their guns can shoot thousands of rounds with no issue. For context, I have an AR with a printed lower that I've put ~1k rounds through without issue. In the US that's the only serialized part, and therefore the only part that would be typically purchased from a dealer and able to be "traced". > Folks literally etch their gun barrels with the same specs as commercially available barrels. I've made a couple of pistol barrels with ECM, and they're no less accurate than commercial stuff. It might be interesting to know that I made those specifically in order to comply with US law - not to "evade" it. Even a single-shot rimfire pistol falls under the National Firearms Act unless it has a rifled barrel. It would have been much simpler to just use a metal tube, but I didn't want to deal with filing the forms, paying the tax, and waiting months for approval before putting together a random project that I started on a whim.