Warne Ruger M77 30mm Medium Scope Ring - Matte Black - Ruger Model Specific fit Sold in pairs, Maxima Ruger rings are packaged in model specific configurations tofit Ruger's proprietary dovetail Warne's Maxima Maxima rings are a solid steel, vertically split ring that handle even the most punishing recoil, or large, heavy scopes. Since each firearm manufacturer has their own proprietary mounting rail design, each ring model must be machined to exacting tolerances for proper fit and function. Because of this, the Warne Ruger Rings are able to fit right onto the receiver's dovetail with no need for a mounting base. The Ruger Fixed Rings are available the tapered receiver style like the Ruger M77, Hawkeye & Super Redhawk. The Ruger M77 style rings are packaged as two different heights to accommodate the tapered mounting surface on this firearm. Ruger Fixed Rings utilize 4 T-15 Torx style socket cap screws for secure and permanent optics mounting. Permanently attaches to firearms's dovetail. Ruger specific scalloped recoil control key for positive engagement of ring to receiver dovetail. Rings securely mount around scope using 4 Torx style T-15 socket cap screws.