Leupold Mark IMS Features The Leupold Mark IMS solves the height and eye relief challenges unique to AR-style rifles by raising and pushing the scope forward in one integrated cantilever unit. This eliminates the need for separate riser mounts or specialized optics built with shortened eye relief just to fit an AR platform. Machined from aluminum and finished in matte black the mount clamps directly to a MIL-spec 1913 Picatinny rail for a solid repeatable zero. A 30mm tube diameter fits a wide range of popular riflescopes designed around that standard. Easy-to-grasp half inch hex nuts on the crossbolts allow for fast tool-light installation and removal when swapping optics or rifles. The mount measures 6.01 inches in length and 1.5 inches in height with 3.34 inches of ring length to securely clamp the scope tube. Recommended torque specs of 65 inch pounds on the keeper clamp and 28 inch pounds on the ring top screws ensure a secure consistent mount every time. Backed by the Leupold Lifetime Guarantee this mount is built to withstand the recoil and handling demands of serious AR-platform shooters. Leupold Mark IMS Specifications Manufacturer: Leupold Model: Mark IMS Compatible Hosts: AR-15 / M16 Color: Black Material: Aluminum Mount Type: Picatinny Rail Scope Tube Diameter: 30mm Length: 6.01 Height: 1.5 Weight: 7.1 oz Available At: GrabAGun