My point isn't that it's a simple job. My point is that it's legal today, and that you /can/ do it. A beginner with a 20 ton press and some other simple tools c

My point isn't that it's a simple job. My point is that it's legal today, and that you /can/ do it. A beginner with a 20 ton press and some other simple tools could probably bend an AK blank and have a rifle in a week or so. I don't know what's involved in making the blank (probably a way to cut sheet steel and a jig for drilling accurate holes). Fiddly bits (springs and such) are available in kits; these are tough to make yourself, but people do. There's a video of gun shops in Pakistan making perfectly servicable rifles under extremely primitive conditions. Of course, the folks doing this have a lot of experience. Sure, printing would make it easier. No, the current 3D printer materials will not work. On the other hand, the AK is designed so that the receiver doesn't need to be uber strong, and we might not be /that/ far from the required material strength for everything except the barrel.