Have you tried e-gunparts.com?
A FEW parts are available from gunpartscorp website.
The 238 is similar to the 258. For parts, try gunpartscorp.com
I would start my search at numrich gun parts corp.They can be found on the web.
you can find parts for your Stevens at bob`s gun parts .com
Jack First Gun Parts. Search the web, they have a web site with the phone number. They do not have a catalog on line.
You can try e-gunparts.com, local gun shops, local gun shows, want ads.
need information on stevens-springfield model 37 410 shotgun
Try Gun Parts Corp. They have parts for nearly every gun ever made.
Shotguns by that name were manufactured by both J Stevens and Crescent. A gunsmith should be able to produce/remanufacture any part you might need.
J. Stevens Arms Company