I might have what your looking for 30" MX8 type 3. The gun has briley thinwalls installed, Precision Gold Pull Trigger, Adjustable Comb stock. Stock and forearm have been refinished. I took a few pictures of it in an americase I am selling. Let me know if you interested.
I've got a comp 1 (actually 3 of them) 1 29.5" Herb Orr choked, 1 32" Wilkinson choked for live birds, Also MX8 bbl bottom choke tube, top fixed again choked by wilkinson for birds, all bbls have some kind of porting, Butler