I wouldn't know how to order a fitted gun. Fitted for what? In October I'm after ruffed grouse, practically in my shirtsleeves. In November, around 8C for ducks and geese, it's light jacket and nylon chest waders. In December, it's heavy jacket, white smock, heavy neoprene chest waders. No particular specification meets all those conditions. I suspect most bespoke is affectation.