Ruger 90323 6B30HM Scope Ring Matte Black 30mm Extra High
http://www.tandktactical.com/shop/736676903238-ruger-90323-6b30hm-scope-ring-matte-black-30mm-extra-high-13557
http://www.tandktactical.com/web/image/product.template/13557/image_1920?unique=ebf5214
Designed to fit a scope with a 30mm scope tube diameter and a 62 MM objective diameter.
