As much as someone will pay!
100 or so
Your western field 822 was made by mossberg firearms company.the model is mossberg model 640K.I would start by cross reference the scope mounts for the mossberg 640K.Good luck!
Revelation Model 107 was made by Mossberg (Model 640K)
Mossberg
Made in 1959.
You will have to contact Mossberg
If it is a Mossberg, it was made by Mossberg. They did make guns for a number of "store brands".
Mossberg made it. It's very similar to Mossberg's model 46.
at the mossberg firearm factory.
You will have to contact Mossberg to find out.
Mossberg made parts only.