Help ID commercial 12" barrel

[n2oldguns]

I took a look at the extractor and it fits in the chamber potion of the barrel just fine. I can clearly see where the barrel could be turned just a mm or less counter clockwise and it would be in straight alignment with the frame. I have not checked the headspace however. I could live with the pipe wrench marks but the canted sights I think will drive me crazy. If I could have the barrel turned to remove the marks that would be great if I did not have to re-blue the whole barrel. Are the barrels on the Luger right hand threaded?

Lugerdoc - Your idea is a good one and makes good sense. I think I will write a letter to ATF technology branch and see if I can get a letter of clarification. If I do and the response is positive, I will be happy to share a copy of this so others that have something similar would be able to use a stock as well without fear of breaking the law. Thanks for the suggestion

[n2oldguns]

There is a photo of the current sight picture.