Clear coat
I have used duracoat on a number of stocks and firearms with pretty good success. I have also used the satin finish clear coat spray can from Brownells as the final coat. It sprays on as well as an airbrush and is very clean, holds up really well and looks great. I haven't found another clear coat I like as much as their satin finish spray.
http://www.brownells.com/aspx/ns/store/ProductDetail.aspx?p=5529&title=Gun+Sav'R+CUSTOM+OIL+GUNSTOCK+FINISH
Good luck!