I don't have much experience with mine yet, but several people at the local club have these. It seems if the mags aren't broken in, you have more problems with them. I shot mine in a match, and only had 1 mag, so I borrowed another. The gun ran fine with my mag, but I had problems with the borrowed mag. I broke my mag in by taking it apart, spraying it with silicone, and loading it full, then let it set for a couple of days. The borrowed mag had never been shot. Give that a try and let us know if the guys at the club are right.