I just had a M12 20 ga reblued by Mitch Schultz of Gunsmithing, Ltd. in Southport, Ct. Did a fantastic job, true Winchester finish and less than half the turn around time of everyone else I called (Nuline, Simmons and another place I can't remember). Gun was completely stripped, polished, blued and complete in 3 weeks. Markings are crisp, clear and metal appropriately polished ( ie, not overdone). Price was within $25-30 of the others too.