That would be a much less useful gun than a lot of the modern 3d-printed designs. You'd want some kind of a handle and some way of injecting the pin into the bu

That would be a much less useful gun than a lot of the modern 3d-printed designs. You'd want some kind of a handle and some way of injecting the pin into the bullet and some kind of a breach (informally speaking). Now we are talking some manufacturing, be it milling or drilling or sawing or whatever. If the result supposed to be as small and convenient as some 3D printed designs are, some metalworking or very precise woodworking is required. The article is about Canada. And apparently there is a niche for some people who'd rather produce and sell 3D printed guns than "tubes and pins". And I pointed out some of the reasons. A 3D printer reliably produces parts that are quite precise with a lot less effort. That is worth a lot of tradeoffs, even if traditional craftspeople scoff at the properties of the plastic. On HN there will always be people nitpicking on every detail left out...