I have a side by side hammer gun, 12 guage, back action locks with a locking lever underneath. The lock plates are marked " geo fisher" . I' m going to restore this thing but its missing a few internal parts and I dont know exactly what they look like. There was an extractor operating cam or something mounted on the pin that holds the barrels to the frame thats missing, and somebody put a carburetor bolt through the frame in place of the original pin. Any of you computer jocks out there have any idea where I might find an exploded drawing of this critter? Any source of information will be appreciated. Larry