You could cold blue it! But usually it will not last that long. Or you can take it to someone who blues. If what you are wanting with a dull anti glare while hunting you might want to consider Parkerizing. It is a real simple process anyone can do! You need to disassemble your bolt obviously, but you can do it on your stove with a parkerizing kit. It does not take any effort to do it. A Pan, the solution, and your stove in the kitchen. If I remember correctly? you heat the solution to about 165 Degrees and Whala! It is done. It has been several years since I have done it but I use to do all the older Remington 870 Shotguns on the agency. Then lube it good and let the lube stand on the parts for a while then wipe off the excess and put it back together. I think you can get the kit in a darker color now other than the traditional grey. Do not Parkerize the Firing Pin. I am sure Brownells probably has the kits. If not you can find the kits on the Internet. And they are not expensive. Just a thought! However if you want it to look fancy the Parkerizing is not your ticket since it is a dull finish.
The Constitution is not an instrument for the Government to restrain the people. It is an instrument for the people to restrain the Government!
“Americans have the right and advantage of being armed. Unlike the people of other countries, whose leaders are afraid to trust them with arms.”
James Madison. Author of the 2nd Amendment