I thank you for all that English, even if you are 'done' for now. With the metal of the gun fresh after bead blasting I think you will soon see some rust appear, Franz. I guess at this point protecting it with some clear laquer or varnish should preserve this look best, but be quick about it.
Another 50 and 80 coming up, my, you are shaking some tree! Some picture(s) here will be nice whenever you have them....
Mit Dank und Gruss,