OH sorry I misunderstood your first question.
There are two pins on the side. The one in the front will allow the trigger to move out. You can just tap them out with a punch or a very tiny screwdriver. The second one is further back...kind of above where the grips would be. Again you can tap that out...it might even be loose enough you could push it out. Be careful with this one as, it's sprung loaded and you don't want stuff flying across the room. Everything should then just drop out.