Vortex Optics Tactical 30mm Riflescope Rings Description Features: Robust 6-screw Tactical Ring is perfect for mounting red-dot optics, magnifiers, and other accessories with 30mm tube diameters to your Picatinny rail. When using this ring to mount a conventional riflescope, we strongly recommend lapping the rings for a proper and secure fit for your optic. This Vortex Tactical Ring positions the center of the riflescope tube at a height of 0.97 inches (24.6 mm) from the base. Sold one ring per package. Product Details: Brand: Vortex Color: BLACK Style: Medium (0.97 in) - 1 Ring Sport: Hunting Item Weight: 0.2 Pounds Material: Aluminum Magnification Maximum: 8 Objective Lens Diameter: 30 months Compatible Devices: Rifle Mounting Type: Picatinny Mount Brand: ‎Vortex Color: ‎BLACK Style: ‎Medium (0.97 in) - 1 Ring Sport: ‎Hunting Item Weight: ‎0.2 Pounds Material: ‎Aluminum Magnification Maximum: ‎8 Objective Lens Diameter: ‎30 months Compatible Devices: ‎Rifle Mounting Type: ‎Picatinny Mount Night vision: ‎No Item Package Dimensions L x W x H: ‎3.82 x 2.91 x 2.6 inches Package Weight: ‎0.18 Kilograms Item Dimensions LxWxH: ‎2.8 x 1.9 x 1.2 inches Brand Name: ‎Vortex Model Name: ‎Scope Rings Suggested Users: ‎unisex-adult Number of Items: ‎1 Manufacturer: ‎Vortex Optics Part Number: ‎TRM Model Year: ‎2015 Included Components: ‎Set of Rings Size: ‎Medium (0.97 in) Hand Orientation: ‎Ambidextrous Date First Available: April 9, 2013