I've owned an M&P Shield EZ for a few months now, and I've put a few hundred rounds down range with it. Until the other day I'd only had one malfunction with it which I'm blaming on the cheap ammo I was using. A couple days ago I took it to the range with a brand new magazine, and two times the gun stove piped the last round in the magazine before it was fired. Can anyone tell me if this is an issue with the magazine being over pressured, or if maybe it's faulty? I don't want to use the magazine or mess with it until I can narrow down the issue, and I can't seem to find anything on this problem aside from a Hickock 45 video where he has the same problem (with the same firearm). Thanks for taking the time to read this, can't wait to see your comments.