Hello, I just bought a new M19-9 classic series revolver. The bluing on the barrel looks different from the bluing on the frame. The bluing on the barrel looks a little cloudy and in certain light a little splotchy—kind of. The frames looks blacker and deeper than the barrel. Does anyone have a similar issue? Is it because the barrel is a sleeve and perhaps a different material than the rest of the revolver? Is this normal on a m19-9? One other thing, the frame looks super smooth, but the barrel has many tiny lines throughout—again, you have to rotate it under the light to see it but you can. You cannot feel the lines, just see under the shine—kind of like swirl after waxing a black car. Any help or information I would appreciate it. Thank you!!!