The Steiner T-Series cantilever mount offers the perfect mounting solution for AR-15 and flattop platforms. Machined from rugged aluminum alloy to be incredibly strong, yet lightweight. This cantilevered mount combines ruggedness, lightweight and adaptability to be the perfect addition to your platform. T-SERIES AR MOUNT FEATURES: Available in two heights: 35mm and 40mmMounts to any picatinny style railDesigned to offer perfect eye relief on modern AR-pattern riflesBubble level on the rear ring for maximum accuracy and consistency Steiner T-Series Cantilever Mount 30mm, 40mm Height 5971