I was recently shown something that worked great for carbon build up on bolts,etc, it was automatic transmission fluid. I recent ran into someone using it and it worked great(soaking it in the fluid). After the transmission fluid , he used brake cleaner, then used oil and lube. The automatic transmission fluid (because of the detergents in it) will break down the carbon and it will just "melt" away. Just something I thought I would share. I wouldn't have believed it until I seen it. But seemed fine. After my next trip shooting, I plan on trying it myself.
" The strongest reason for the people to retain the right to
keep and bear arms is, as a last resort, to protect
themselves against tyranny in Government...." - Thomas Jefferson