The CLR Dip - Gemtech GM-22

I was pretty skeptical and hesitant, but I started with just a few seconds, then a minute, then several minutes at a time with some brushing and picking in between. A few 15-20 soaks with some manual cleaning in between would get the job done nicely. It's almost perfectly clean. Compared to what it looked like after nearly 5k rounds, I couldn't be happier. Now I know.