Try your local gunsmith. The Riverside is a Stevens shotgun. If you can find out which model it is, you can probably find the wood at Numrich Gunparts
Buy my 20 g companion,and there are your firstname.lastname@example.org
Try gun shows, Shotgun News, Gun List, local gun shops.
Try Numrich Arms, they've got a website and a lot of used parts.
I would start my search at Numrich gun parts corp.They may be found on the web.I would also check at E-bay,or gunbroker.com under gun parts.
Where can i buy parts for a sears ted william 22 rifle
I have parts for that model. email@example.com
HAVE YOU FIND WHERE TO BUY THE PARTS, I AM LOOKING FOR THE BARREL OF THIS SHOTGUN my emai: firstname.lastname@example.org