Thanks, Walton. I didn't think to ask him if it was "instantly selectable". I just assumed it would have an external selector similar to a Krieghoff. He e-mailed me a diagram to compare to my sears to determine if my trigger group would need modification to use it. When I call him back I'll ask him about that. It really wouldn't really do me much good if I have to drop the trigger out to change it as I shoot fixed chokes in both MX-8s. Glad you mentioned that, I'll let you know what he says.
Stan