I am not sure about the diagram,but I would check at numrich gun parts corp. first for the parts you need.
Go to Numrich Arms website, you can see a parts list and purchase a parts diagram for about anything- www.gunpartscorp.com
Try e-gunparts.com
i need a diagram of the internal parts of this gun. where would i find it..
If this is a single shot break action shotgun, I'd check try parts for a Stevens 94 or maybe a Harrington & Richardson Topper. Numrich Gun Parts at the related link may be able to help.
In America, we contact the manufacturer directly. They are often willing to share information regarding their products gratis.
Try e-gunpartsl.com
The model is obsolete, however we have a good supply of parts for that model. sales@countrygunsmith.net
What model????
Contact Customer Service for Savage Firearms. They have owned the Stevens name since the 1920's.
I have parts for that model. sales@countrygunsmith.net
www.gunstockinc.com