SightMark Tactical 30mm Fixed Cantilever Mount w/ 20MOA Black. SightMark designed these One Piece Rifle Scope Mounts with a 2in forward offset to provide extra eye relief and a more comfortable cheek rest position. The SightMark Tactical 30mm Fixed Cantilever Rifle Scope Mount w/ 20MOA is constructed from durable lightweight aircraft-grade aluminum for a tough platform to host your optic. Use this SightMark Tactical 30mm Fixed Cantilever Scope Mount with 20MOA to attach a Rifle Scope to any weapon while holding zero throughout. Make your Mark. Specifications for SightMark Tactical 30mm Fixed Cantilever Mount w/ 20MOA: Manufacturer: SightMark Height: 2.48 in Fabric/Material: 6061-T6 Aluminum Color: Black Base/Mount Type: Cantilever Ring mount Tube Diameter: 30 mm Ring Height: 1.5 in Length: 5.98 in Included Accessories: Torx Key Hex Key Weight: 5.8 oz Width: 1.29 in Condition: New Gun Type: Rifle Quantity: 1 Diameter: 30 mm Finish: Matte Features of SightMark Tactical 30mm Fixed Cantilever Mount w/ 20MOA: 6061-T6 aluminum body Fits Picatinny rails Matte black non-reflective finish Fixed mount w/20MOA 30mm ring Ability to hold zero when transferring from one firearm to another. Package Contents: SightMark Tactical 30mm Fixed Cantilever Mount w/ 20MOA SightMark SM34021: Tactical 30mm Fixed Cantilever Mount w/ 20MOA Black