The Nightforce X-Treme Duty Ultralite Unimount is designed to remain on the scope at all times, allowing quick removal of the scope or interfacing with different firearms. It is the most accurate Picatinny mount available, designed to maximize long-range capability. The Nightforce X-Treme Duty Ultralite Unimount is the ultimate mount for attaching to weapons with an integral picatinny flat top-type receiver. Precise tolerances ensure that the riflescope is not subjected to stress, strain or bending as the ring screws are tightened. The Unimount is finished with a matte-black coating. Fits 30mm scope tubes Height: 1.44 inches Features 20 MOA built-in elevation Mfg: Nightforce