Originally Posted by MaD
...The setup on that gun confuses me. So CA is going into the valve and you're using a spent 12g to seal off the front of the valve (where the instapierce is?).
Correct. Lever changer holds a spent 12ie in place to seal off the air chamber.
Thanks for the advice everybody. I'll let u all know what I find out when I get a chance to pull it apart later.