I'll add to the CLP story. When I was in the National Guard in the early 1990's we had M-16's from Vietnam. When the weather was bad or the training budget was low, we would have a weapons cleaning day or weekend where we would clean all the M-16's & other weapons. We would clean the M-16's with CLP and after very carefully scrutiny from the armorer, the guns would go back in racks when clean. A couple of months after a weapons cleaning weekend the armory got inspected and all the weapons cleaned with CLP had dirty barrels. The CLP had pulled more carbon fouling from the barrels as the guns sat in the armory racks.
More plainly the CLP will continue to pull carbon fouling out of the barrel until there isn't any more. Sounds great in theory, in practice, with an old gun, you could clean it every week for a year and the CLP will still pull fouling out of the steel.
