Wow, I would expect when you purchase a new gun that it would at least cycle for a period of time before you start to get FTE and stovepipes, but after looking at the other threads....it looks like I am not the only one It made it through 15 rounds and then started having problems. It took the dealer 2 days, a bushmaster extractor, and a heavier spring and now she runs like a champ. Thanks for all the info you guys have posted, it really helped the dealer expedite the repair service.