On Tue, 6 Mar 2018 20:13:37 -0500, Alex wrote:

I brought the M1A home today. The stock is a dry walnut - not a smooth
varnish like my shotguns and other rifles. What do you recommend to
preserve the wood? Tung oil seems to be popular. I have multiple
dehumidifiers in my safes so I don't want it to dry out and crack.

We had some stuff in an oval OD can we used on the M1s. I think it was
boiled linseed oil.
They said not to leave the oily rags laying around.