Try e-gunparts.com
We maintain a good inventory of parts for the Stevens 311, including replacement wood. sales@countrygunsmith.net
The Stevens 311 is a double barrel shotgun.
Try e-gunparts.com, Shotgun News, Gun List, do a web search on "shotgun stocks".
there is the Stevens side by side shotgun model 311
Yellow pages category = GUNSMITHS.
www.e-gunparts.com
You might find one at Numrich Gunparts
The best that I can do is state that the Stevens model 311 side by side was discontinued in the year 1989.
Find a gunsmith to show you. Go to the library and look for firearms books on maintenance.
I think it is the same as a Stevens 311, made by Savage Arms, for marketing by Sears. A great, utility shotgun. If so, a stock for a Stevens 311 should fit it, but there are two types: one with a straight edge where the stock neck meets the receiver, and the other with a notched edge. Good luck.
The original Savage?Stevens model 311 shotguns were made from 1926-1945.The more recent made Stevens model 311 shotguns were discontinued in the year 1989.
Try e-gunparts.com