The Riverside model number will be identical to the Stevens number.
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
Riverside was manufactured by Stevens, so if you can identify the equivalent Stevens model, you should be able to find parts. Check with a local gunsmith.
Stevens/Savage used the Riverside name from about 1920 to 1945.
try looking at savage or Stevens shotgun diagrams. I found a firing pin for a 16 gauge riverside it was an old model 94 Stevens part
Can't give you an exact date, but Stevens used the Riverside name from about 1920-1945 according to my notes.
Riverside Arms was a tradename used by Stevens and later by Savage. Would help to know what other markings are on the gun.
Stevens made the sb-300. You can cross reference it and it comes out to a Stevens 311
Riverside Arms is a brand name used by the J Stevens Arms Co. on many good quality shotguns. The value depends on model, gauge, and condition. There is little collector interest in single barrel shotguns. Information about J Stevens Arms apply to Riverside Arms Co.
Riverside was manufactured by Stevens, so if you can identify the equivalent Stevens model, you should be able to find hammers at http://www.e-gunparts.com/ Or if you still have one hammer (or a broken one) you can take it to a local gunshow and dig through bins of miscellaneous parts looking for a match.
== == "Riverside" was a brand model shotgun produced by the J. Stevens Co. (which was bought out by Savage in 1920) - These were utility grade double barrel shotguns manufactured between 1877 and 1988. If the serial number is prefixed with a letter it was manufactured after 1949. If there is no letter, it was manufactured prior to that. Thats the best I can do.
The only reference I have for Riverside Arms says that they were made by Stevens, J Arms (who are now owned by the Savage Arms Co.). Riverside Arms was probably a trade name for one of the large wholesellers operating during the early 1900's. The fact that the gun has a s/n implys that it was indeed made by a major manufactor (many of the low cost guns of that era did not), which reinforces the above reference.
The model 5100 Stevens shotgun has a plastic stock