Designed for full-size scopes and has a 34mm objective; Includes two Picatinny Rail Sections and Cradle; Quick release mechanism for easy removal and installation; Secure 6-screw mount; MIL-STD 1913 rails are included that can mount at 10, 12, and 2 o'clock; Compatible with night vision devices when used with a full-size scope; Fits the four-screw and six-screw X-Treme Duty rings, Unimounts, and UltraMounts; Made in the USA