'Das a FINE piece of machinery ya gots there !!! I've never seen one of those rigs either. I wonder if it'd fit into a model 795 stock with some hogging out of the barrel channel for that bull barrel ? I'll be watchin' to see what others have to say on it. Congrats on that find !
Danged "9" key keeps stickin' on me !!! Meant that as 795, not 75.