This is a Warne Scope Mounts Ring known as the Fixed, model 2R7M.
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.
Features:
Innovative design requires no base
