The hm3x is has an aluminum body 3x magnifier that includes a quick release ambidextrous flip-to-side mount with absolute and lower 1/3 co-witness mounting solutions.Additional features include 2.75 of eye relief ip67 certified water resistance with windage and elevation adjustment for precision zeroing.Includes qd release mount t10 l key and user manual.Magnification: 3xField Of View: 37 ft @ 100 ydsEye Relief: 2.75"Length: 3.90"Weight: 9.80 ozFinish: BlackProofs: Waterproof