These beefy scope mounts will withstand the recoil from the biggest calibers with ease. They mount the scope at the same height as the ironsights on an AR-15 (approx. 1.4 inches above the top of the receiver). Made from aircraft grade aluminum and plated to Mil. Spec. Mounts scopes with 30mm diameter bodies. Includes Steel clamp and hex screws. The width of this scope ring mount measures 3.5 inches (measured from the center of the first scope ring to the center of the second scope ring).