I remember a Trapper's Gun Works back in the late '70s through the mid '80s. It was run by Lin "Trapper" Alexiou in Fraser, MI. He specialized in handguns for PPC, IPSC, law enforcement, and hunting. He primarily worked on S&Ws, Colts, and Rugers. I think the Scorpion was his version of a cut-down Model 39.