there was a topic about "stripping" bluing just a little while ago. And several topics on this forum about bluing/browning,,just scroll back, and back,,and back further and read the archives. A ton of really good info.
Brass is easy, like Captchee said, shoot BP through the gun and take the first dirty filthy cleaning patch and wipe it wet on the brass,,wait 24 hrs. If ya don't like that,, shine it again with 0000 steel wool, (never liked shiney brass myself).
Ya might have a little trouble with the engraved name,,but just do one thing at a time, OK?