A rigid, lightweight design, the Aero Precision Ultralight Scope Mounts complements many high-end optic platforms. These scope mounts are designed to fit AR type upper receivers with Mil-Spec 1913 Picatinny rails and features a cross-slot keyway that offers excellent recoil protection. Available in 1", 30mm, and 34mm Ring Diameter, Black Anodize or FDE Cerakote finishes, and (3) available Eye Relief configurations: Standard, Extende