Take the slide off, and check the blow back chamber where the mag rubber seats up to the hole to take the gas in. Look for damage, and if it is a model where the chamber slides, check to make sure it functions right.
Wait a second, I bet I know what it is. If the mag got stuck, and you ripped it out, Im allmost positive that the, whatever it is, that hits the mag valve got fudged up. I dont know that gun specifically, but take the grip and slide off and check it out. Try and cock it and make sure the internal hammer hits properly.
Bring it to the game this weekend if you are going, and Ill see what I can do.