I shot my sig last night at our league match but afterwards I pulled out my 2011 and one of the other guys was looking at it. I was showing him that when I would try to shoot it the trigger wouldn't move. He reached up and bumped the mag and the gun fired. We did it several times. I would try to shoot and he wiggled the mag and the gun fired. We kind if thought it might be the trigger binding. Does anyone have any ideas?