Ruger 90275 6B30 Scope Ring Matte Black 30mm Extra High
http://www.tandktactical.com/shop/736676902750-ruger-90275-6b30-scope-ring-matte-black-30mm-extra-high-7874
http://www.tandktactical.com/web/image/product.template/7874/image_1920?unique=b4943d0
Designed to fit a scope with a 30mm scope tube diameter and a 62 MM objective diameter.
