When the AWB went away I sent them my upper to do the works on it. It was about 6 months old, and had less than 500 rounds through it. They did a great job, but the charging handle that came back with it was bent to hell. I called, and they said send it to us, I did. About a week later I got a call from a guy there who said thats what you sent us, I said no it's not my upper was almost new. He said he remembered working on mine, and it was beat to hell, and that they couldn't make a profit if they were replacing peoples damaged parts. I said thats true, but either you damaged it, or you mixed it up with someone elses stuff. He said thats not possible, and there was nothing he could do for me. It's not that they had a bad product, it's just that their customer service sucks. They do make good stuff and I know it's only a $20.00 part, but it's a principal thing.