for my stuff i used a dremel wire wheel to clean the bluing out of the checkering in the take down lever, i used a combo of sand paper (sometimes put a little oil on the wet/dry paper) and cray rubber abrasive wheels to polish the parts since i was going for a polished finish, then with latex gloves on i cleaned all the parts with carb cleaner. i put them in the oven @425-450 and watched them till they were done. I did each part sepratly. when i was done i quenched them immediatly in 3n1 oil. to save oil i made a little cup out of tin foil, and used a q-tip to spread the oil around. check out
www.raceratb.com/luger.