The AD-B2 modular base is the medium base in the ADM modular lineup. It is designed to accept several different risers to accommodate a variety of optics. Standalone, it is ideal for the 1.5-3x Power Mini ACOG Scopes, such as the TA33 and TA44. A specific height is not provided as it will be different for the many different optics it can accommodate. I would recommend contacting American Defense Manufacturing directly for more information.