Grouse Man said:BreakFree CLP. It thoroughly dissolves all that carbon and crud, you won't need to steel wool it or scrape it off. And in future, shoot the piston 'wet' with CLP and you'll never, ever have to do anything more than simply wipe it with a rag every couple of hundred rounds and relube. It's amazing stuff. Heck, you could just spray it into the dirty piston area and it'll clean it while you're shooting!



























