rifle scope optics 1)fully Multi-Coated optics 2)easy-grip target-style windage and elevation adjustments Riflescope Riflescope opticsFeatures:1) Specification: 10-40x50E-SF2) Magnification: 10x-40x3) Objective diameter: 50mm4) Exit pupil: 1.25-5mm5) Length: 420mm6)Tube diameter:30mm7) Eye relief: 85-92mm8)Field of view(@100YD):1.8-30fully multi-coated opticsilluminated mil-dot glass-etched ...