Wheeler Engineering MSR Cantilever 30mm Scope Mount Black. Specifications for Wheeler Engineering MSR Cantilever Scope Mount: Manufacturer: Wheeler Engineering Fabric/Material: 6061 Aluminum Color: Matte Black Base/Mount Type: Cantilever Ring mount Included Accessories: Flip-out Anti-Cant Indicator Hardware Condition: New Ring Quantity: Pair Finish: Anodized Quantity: 1 Features of Wheeler Engineering MSR Cantilever Scope Mount 661 aluminum construction with flat top ring Package Contents: Wheeler Engineering MSR Cantilever Scope Mount Wheeler Engineering 1099953: MSR Cantilever 30mm Scope Mount Black