I'm thinking about picking up a single action in .22 and came across Ruger's Single Ten from Lipsey's. They come in a stainless with 4.68 or 5.5 inch barrels or a blued in 4.68 only. I really like the blued one(especially with the FO sights). Since the stainless models obviously have stainless frames, does the blued model have a blued alloy steel? Or is it aluminum like the other single six series? Any info is appreciated.