i used white vinegar on the barrel / receiver, And i used a beed blaster on everything else to remove blueing. i tried a few different methods for polishing… various grit sand papers etc.. i found the faster and easier way was to rub with scotch red pad until the dull disappeared, then used metal polish. for the smaller, hard to reach places, i used Dremel polishing bits and paste
ps. sorry for the thread hijack. ;p