Well, I was speaking more in terms of functionality, not materials. I didn't mean to imply that making a bolt action rifle was easy, but I find it hard to belie

Well, I was speaking more in terms of functionality, not materials. I didn't mean to imply that making a bolt action rifle was easy, but I find it hard to believe it is harder to make a bolt action rifle versus a semi-automatic AR-15. I'm not a gunsmith, so I could be wrong but the difference in complexity between the two seems to suggest this. I would have to assume that making a single action revolver would be easier than a semi-automatic handgun. Discussions of quality of the resulting weapon is a different matter though. If we had printers capable of making a functional gun, then the government can try to regulate individual parts all they wanted. It would make no difference. It's only a matter of time before there's a simple way of making a high quality rifled barrel of your choice of caliber. They would have to look into controlling the materials required; metals, gunpowder, and so on. Even then that's a losing endeavor, simply because how can you tell the intentions of the person buying the materials? You can't. This goes beyond weapons, the ability to create nearly anything you want in your home with no one knowing opens up a huge can of worms that I feel that most people simply cannot comprehend.