$50-$90
1972
gunpartscorp.com/catalog/Products.aspx?catid=10889 The part number would be 67710B. The gun was a Western Auto gun and originally made by Mossberg.
Not much, $100 to $120.
About $10-12
How much is a 16 gage single barrel shotgun model 350A Revelation
Modle 101 1380 410 shotgun
You will probably have to have them made.
310 revelation 20 gauge
And your question is?
Yes.
Savage