Yeah , finally took it out. It is wood, when I first got it it just felt heavier.Have you taken it out of the stock to see if it is a wood or synthetic stock? It appears to me someone simply painted it with some rattle can textured paint that you can get at wally world or about any hardware store.
kroil or ballistol might helpThe power adjuster ring on this one is REALLY hard to turn.
Okkroil or ballistol might help