need advice on blue sky m1 carbine

[INLAND44]

That old G.I. bore cleaner is water-based (milky) for neutralizing the residues of corrosive primers, but it was used in all small arms including the carbine which never had corrosive ammo. However, if you were to use some Chinese LC52, it would be ideal for cleaning afterward. Probably the only WWII U.S. small arms that used corrosive ammo were the pistol and sub-guns in .45ACP, so the anti-corrosive bore cleaner certainly came in handy when it could be used. The Army typically used an oil drum full of water heated over a fire, into which some lye soap was diluted, for cleaning small arms after an action. The hot parts dried quickly and then were dipped in oil while still warm. This definitely worked and incidentally took care of any corrosive residues. Unfortunately many parts were mixed up in that process, but the only thing that mattered was a reliable weapon. With such cleaning methods and the rigors of wartime use, you can easily see why so many carbines had to be rebuilt/refinished during and after the war.