UPDATE: M&P9: Got it back from S&W. This is the 2nd return. I sent just the gun in, no magazines, and it got sent back with a 15 round magazine in it, which I thought was nice. so anyways, this time around they replaced the extractor spring, replaced extractor, barrel modification, and replaced ejector. Casings still fly at my face, but I noticed when I used the magazine they sent me, the casings went where they were suppose to most of the time, but when I used a magazine that was original to the gun, it was worse. So maybe my mags. are bad? Called S&W to see if they could send me some new mags., they said yes if I wanted to send in my old ones. I've pretty much given up though. I'm tired of fighting with the dand thing. I'm getting rid of it and getting a Glock 17 9mm. I heard they are quite reliable and that's what I need. Thanks anyways S&W, but no thanks.