Let me stick my toe in these turbulent waters and share a little something everyone might not have thought of,... and should not lose sight of. This thread started with some mention of staying off the books just in case there are future bans. I would like to point out that total avoidance of government paperwork is not going to do that for you. I bought an imported pistol competely legal and papered. Later I bought a replacement barrel, extended and threaded, completely legal- no paperwork. Years pass, and the FBI calls me asking about this barrel and whether I installed it in a pistol,.. and they want it for ballistics tests. I turn it over and quiz the agent about whats going on. He explains to me there is a west coast murder they're trying sew up. The forensics on the bullets in the body and the spent cases indicate a Russian Makarov with a aftermarket barrel. They go to the seller of the barrel, (FAC, Federal Arms Corporation) and they give them a list of customers that bought one of these barrels. I got my pistol back and the agent I dealt with was real nice, but the whole thing made me quite nervous for a while. The point is that sales records are a tremendous resource on top of background checks and paperwork,... any one part you buy may lead them to you.