Crack shot rifle

Looking for someone in the Jackson area that has one of these rifles that I can look at for an hour or so to take some measurements. I have one but im missing the barrel, ejector, and firing pin. I can find an old barrel to cut up and use but would like to check out the firing pin for sure. Looks like the ejector is going to be simple.

I have. One in the attic that went thru a fire years ago I will bring and you can do whatever to it