Joe:
I did these trigger guards and barrels with Mark Lee's Express rust blue from Brownell's, polished as noted in my first post.....sorry the pics aren't so good......
As you can see, one can produce a blue or black finish, as desired, depending on the number of rusting and boiling applications,
also based on the steel alloy composition.....
The bottom picture is of a Winchester 1894, I did the barrel with Mark Lee's Express rust blue, the forend cap and screws I did with Brownell's Nitre blue material......you can see the contrast......
If you want to do it yourself these are good products to work with........
