No, OxphoBlue will not color stainless to an appreciable degree. There are several refinishers who advertise the bluing of stainless that advertise in the GunList and ShotgunNews. I've not used them so have no recommendation. Brownells sells a hot salt type blue for stainless steel. It is listed on page 210 of their catalog number 57 as Oxinate No. 84. It will blue stainles, cast iron and high number Winchester M94's with the high silicon cast receivers.