This thumbscrew flattop mount clamps onto 1913 Picatinny rails. - Height = 0.640 inches. - Weight = 4.2 oz. - Overall Length = 2.80 in. - Height of Mount Surface to Optical Axis: - 1x24 Reflex = 1.648 in. - 1x42 Reflex = 1.800 in.
Determined at checkout.