Hi Alvin:
The Kollmorgen 4X Bear Cub is one of the best scopes that I have ever used!
I broke mine in half when I fell while crossing some frozen muskeg that had about two feet of fresh snow on top. When it broke,I gathered up all of the pieces that I could find, and was suprised to find a large spring in the mix of parts. This spring was about 2.5" long and looked like a valve spring that would have been used in an auto enging. It fit inside of the tube . I guess that it was to take up some of the recoil to protect the internal parts of the scope from recoil.
My scope had a 26mm tube and was in Redfield rings. If I remember correctly, id did not have a cented reticule. It did have the brightest and best defined view that I had ever seen in a scope. I wonder if there is a scope made today that would match its performance. Any suggestions as to what scope would match its optics?
Stay well,
Franchi