Burris Ruger to Weaver Scope Base Adapter for Laser Rangefinding Scope Ruger 77 Matte Black

From MidwayUSA

With this adapter, you can use Burris Zee Rings on your Ruger rifle or handgun. It properly anchors and aligns your scope so you can consistently put rounds on the target. Eliminates the need for different height rings. Note: Mounting hardware included. Features2-piece, solid steel designStrong and lightweightCompatible with Ruger firearms that feature the proprietary Ruger integral mounting systemAccepts Weaver style ringsBacked by the unconditional Burris Forever Warranty