The bare stocks were dipped into vats of IIRC raw linseed oil, pulled out and left to dry. That's it. I have a couple of "like new" walnut stocks from Fred's, and they look very dry, like all that they had on them is one coat of brown stain. It was the GI's that worked over their rifle stocks to give them a nice finish. Just think, these two stocks I have came from demilled M14 rifles that were brand new, never issued, (unless the stocks were replaced with synthetic stocks prior to shipping to the Baltic states).Was it brushed on, sprayed or rubbed into the wood at the arsenals?