Watching at 1/4 speed, it is obvious, the officer fired before he came to full grip, and the slide hit his left thumb as it was cycling.
Doesn't matter what semi-auto he was shooting, when that happens, you're getting a jam that will not be easy to clear. Have to strip the mag, cycle slide on those. He was having a problem stripping the mag because he wasn't hitting the mag release much of the time he was trying to strip the mag.
Damn good thing his 1st shot made contact, otherwise there'd of likely been some dead cops in that room.
