Buy parts for 410 Stevens model 67 pump shot gun.
www.gunstockinc.com
I have parts for that model. sales@countrygunsmith.net
I have a single shot Springfield shotgun but there is no model number anywhere. It looks just like a the Stevens Model 94 and has several identical parts although I am not sure what series of the 94 it is.
It is a Stevens 94 series shotgun, which was produced for many years. Would have to see the parts to determine which variation of the Stevens 94 it is. WAG would be 1960's-1970's.
It's a pretty common gun, so any gunsmith should have a source for parts.
Check on Numrich gun parts corp website.
Yellow pages category = GUNSMITHS.
Try Numrich gun parts corp.or gun broker.com under shotgun parts.
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.
Numrich Arms should have them.
A FEW parts are available from gunpartscorp website.
Numrich gun parts. Parts availability depends on if you have an old model or new model. There is a nice schematic on their website listed under Stevens 101-7