I am not sure about the diagram,but I would check at numrich gun parts corp. first for the parts you need.
i need a diagram of the internal parts of this gun. where would i find it..
You will need to find out who made it first.
In America, we contact the manufacturer directly. They are often willing to share information regarding their products gratis.
It a Savage model 30H
Contact Customer Service for Savage Firearms. They have owned the Stevens name since the 1920's.
how can i find a bolt assembly for my j.stevens 410.gauge shotgun model 38.b