I’m amazed the amount of media hype this guy has created. To print a lower receiver or any part might be possible, but if you really wanted to get ahold of a gun by making something, printing it is the stupidest way to go about it. I compare it to sharpening a pencil on a 4 axis CNC- but making the whole pencil out of fragile material.
By buying a partially machined lower receiver (which does not require a background check or any regulation) - and performing a couple simple machining steps (like drilling some holes) - you accomplish the same part. And it’s made of metal- so the chintzy factor evaporates.
If someone like Glenn Beck is getting interviews with the guy, I smell someone after funding with no real goal - it’s all hype. He is against the “collectivism of manufacturing” - in other words he doesn’t like how much large machine tools cost? How can one be a “functional” anarchist (oxymoron)?