On line auctions, gun shops, gun shows, pawn shops want ad, for sale ad.
Which model??
try bob`s gun parts. they carry parts for lots of old guns
Numrich gun parts
Try egunparts.com
you can find parts for your Stevens at bob`s gun parts .com
Check with a gunsmith, or find the model number of your rifle, and check on line parts supply houses, like gunpartscorp.com
We have parts for that model. gunshop@nctv.com
Try Nurmich Arms
Numrich Arms is a good source for gun parts.
Go to Numrich Gun Parts Corp.
Regrets- you probably WON'T find them. That rifle was made from 1928-1931. Gunpartscorp is sold out of used parts for that model. You can check with the Mossberg section on the rimfire central forum, or contact Havlin Sales through their website, but the rifle is simply too old, and made for too few years. Good luck in your search.
To find out how old a Winchester rifle is one would need to take the rifle to an appraiser or gun shop. The gun shop will be able to look up the gun by the serial number.