BigDodge,
I did a search and found the S&K web site http://www.scopemounts.com/schmidtrubin.html
I believe these scopebases are mounted on the original K-31 rear sight base. Something similar to the B-Square design for the Swedish Mausers, where you remove the ladder portion of the rear sight by pulling the hingepin. Don't know first hand about their quality or design
Going by the past comments made from B-Square buyers, they aren't the most stable mounts compared to the D&T mounts. You also have to consider that these mounts require a long eye-relief as in pistol scopes, or red-dot scopes. Have you considered the MoJo peep sight system? Excellent design!
http://www.mojosights.com/schmidt_rubens.html
savageT
I did a search and found the S&K web site http://www.scopemounts.com/schmidtrubin.html
I believe these scopebases are mounted on the original K-31 rear sight base. Something similar to the B-Square design for the Swedish Mausers, where you remove the ladder portion of the rear sight by pulling the hingepin. Don't know first hand about their quality or design
Going by the past comments made from B-Square buyers, they aren't the most stable mounts compared to the D&T mounts. You also have to consider that these mounts require a long eye-relief as in pistol scopes, or red-dot scopes. Have you considered the MoJo peep sight system? Excellent design!
http://www.mojosights.com/schmidt_rubens.html
savageT