Nightforce NXS - 2.5-10x32mm - ZeroStop - .250 MOA - IHR - NVD - PTL, Black, 30 mm C474 Internal Adjustments: Elev- 100MOA/27.3 MIL, Wind-100MOA/ 27.3MIL Tube Diameter: 30mm Eye Relief: 3.7" Mounting Length (inches/mm): 5.7/145 Weight (ounce/gram): 19/539