Sub-2000 barrel finish

Just finished installing the full-sized muzzle brake. Initially tried installing it with the vice jaws and my woodworking vices (the only vices I have). Taped everything just like in the video. Clearly was not going to work so I stopped trying and removed it from my vice but I had already torn the tape and marred up my barrel’s finish. I went to my neighbor’s house who has a metal working vice and installed the muzzle brake with no problem in about 5 minutes. Lesson learned.
So here’s the question. Is the barrel finish a blueing/blacking? What can I do?

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