They are an honest company and do what they say they will do, I am not sure what was going on with that gun. It shot, shot well did not malfunction but as you can see chewed up the brass. At the beginning I said, just send me a new upper, they wanted to fix mine, and I honestly don't know if they had made any progress. One person told me the gun had been rebarreled and shooting fine, the next day someone told me they were waiting on a barrel. Maybe it was just timing with summer breaks, but I just wanted to get a working rifle before hunting season. The gun had more accuracy potential than the MP10 based on how it was shooting with 30 rounds down the tube, I honestly am more disappointed than anything else because I wanted it to be repaired and sent back. If they had just replaced the upper this discussion would be moot point. At the end of the day I would not be afraid of the new G2 in 16 inch barrel configuration, which is the one I think they did all the 2 years of testing on.