Slip2000 carbon killer. www.slip2000.com.
Sure sounds like it is the same thing as the basic $3 green can of brake cleaner, which also works very wellGet a can of Break Free's Powder Blast Gun Cleaner from Wal-Mart, read its directions carefully and give it a try. That stuff is death on powder residue.
DO NOT allow it to get on plastic or a painted surface -- EVER. One of its uses is dissolving plastic fouling in shotgun bores, which is good, but dissolving plastic parts of a firearm would not be so good.