Ruger 90409 5BHM/6BHM Scope Ring Set Matte Black 1" High
http://www.tandktactical.com/shop/736676904099-ruger-90409-5bhm-6bhm-scope-ring-set-matte-black-1-high-12573
http://www.tandktactical.com/web/image/product.template/12573/image_1920?unique=736a2c0
High scope ring designed to fit a scope with a 1" scope tube diameter and a 52 MM objective diameter.