I posted a comment in the Gunsmithing thread about rust removers. Any dilute acid (muriatic etc) will remove the bluing but you should be careful of some of the rust removers, as they can leave unwanted coatings on the steel.
http://www.canadiangunnutz.com/forum/showthread.php?t=419458
http://www.canadiangunnutz.com/forum/showthread.php?t=419458


















































