Ive only had 1 FFL try to screw me on a MG. I bought it private party and asked the seller if he would drop it off at his SOT friends place because it had an issue and it needed a repair. He dropped it off and the repair was small , I expected it to be back with the seller within a week or two. Well 10 months passed and the seller lets me know its approved but the SOT had not returned the gun. I called the sot several times and eventually just showed up at his store front that he shared with a non FFL non SOT. The SOT had told me the repair was done but he was out sick , I walked into the back and my gun was sitting on the counter unsecured with no repair done. I took it and a few weeks later he ended up getting shut down by the ATF. Luckily it was just a close call and Im not sure if he was just stupid , lazy or a cheat. I didnt know the guy , that was my mistake. Ill only ever use people I know from now on. Luckily once you get into machine guns you tend to meet other people that are into them and there are usually a few go to dealers that are always upstanding and local to you, I use a guy now that has his SOT and runs his business from his garage. Whats funny is he actually has a whole store in his garage and there are always people coming and going.