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.
The 12 gauge Riverside Arms shotgun you mentioned was manufactured by J. Stevens Arms & Tool Company. Riverside Arms was a trade name used by Stevens for their shotguns, and the model you refer to is likely a variant of their pump-action shotguns. The numbers 5646 and 5847B likely correspond to specific model or serial information pertaining to that particular firearm.
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.
The Riverside Arms 12 gauge shotgun, marked with the model number 16666B, was produced by the J. Stevens Arms & Tool Company, which manufactured these shotguns primarily in the early to mid-20th century, around the 1930s to 1940s. Riverside Arms was known for its affordable and reliable shotguns, often sold through mail-order catalogs. To determine the exact year of manufacture, you may need to check the serial number against specific reference guides or databases related to Stevens firearms.
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.