Thank you. Lots of great info.Cpl Norton is the expert on USMC Unertl.
Most of that rifle can be cleaned up by you. It's a lot of handwork (no dremel) with sanding blocks and emery paper. Once it's repolished evenly, it can be reblued. Consider taking a NRA Summer Gonnesmything bluing class and if you take it at Trinidad, I'll meet and supervise your work (last time I hung around I came away with two articles that were published).