Think their were 3 variants ,cougar ,black major and the other marketed by barnett international as I believe the hellfire ,it's been a bit but I have all 3 mothballed .im sure the barnett was hellfire but I guess if I'm wrong I will get corrected please.
Not brilliant pistols despite a great look.the piston if I remember right was split down its length .
Spent a long time trying to improve power but it was poor from memory 4 half ft lbs ish.
The scorpion by BSA should have been produced with a wire stock as the cougar it would have looked and shot nice.
Love the look of the milbro though ,it did look a tool .