On 4 November, Wired reported a court case where it is alleged that a West Virginia man disguised the plastic components as wall hangers and sold hundreds of them online. It says that criminal charges against one West Virginia man suggest that the digital gunsmithing method has been adopted by violent, anti-government domestic extremists: the Boogaloo movement. Timothy Watson is accused of selling more than 600 3D-printed plastic components of automatic rifles through his website, Portablewallhanger.com.
https://www.wired.com/story/boogaloo-boys-3d-printed-machine-gun-parts/
I had omitted the following link (as it did not seem to generate much interest!), but it seemed time to add it again and say that, if you would like to make a (polite) gesture and help me with my removal and computer costs, I have a page at https://www.buymeacoffee.com/KoIvM842y