well i just got a new xd9 compact. i took it to the range after i got it and put 150 rounds thru it. i love it so far. when the first mag ran out the slide didnt lock back. i think its because my thumb was on the release button, because all the other mags that didnt happen. even when my buddy's girlfriend shot a few mags it was flawless. my buddy got an xdm-40. i think i like my xd better. any other ideas why the slide didnt lock back on that first mag??