Soak metal parts in brake cleaner. It works very well. Just be sure to oil parts accordingly when done.
For the stock, I used hot water and Simple Green with a 0000 steel wool pad. Did Howards Restor-A-Finish for an oil/wax. Later I applied Tom's 1/3 Military wax from The Gun Stock Doctor
using instructions on that site.
Here's how it sits today.