I don't have a 20 gauge but I have a nice 1977ish Rem 870 Wingmaster with like new vent rib barrel and it currently has a smooth bore slug barrel with a Simmons shotgun scope. It's mounted on a saddle mount. It shot Winchester Super X 1 oz hollow points slugs pretty good the last time I hunted with it back in the early 1990's! Lol
It's a great condition but like I said, it's it 12 gauge though.
The stock is a dark glossy wood grain.