Visionking Opitcs 4-20x50 Side Focus Rifle Scope High Power Huntig Riflescope Tactical .223 .308 3006 .338 Luneta Para Rifle Description: Visionking 4-20x50FFP is first focal plane rifle scope.It now mainly export to Southeast country for military usage,with super good optical system,90% light transmission,and provide extreme good performance in extreme hard conditions. Specification: Magnification:4x-20x Objective lens:50mm Exit Pupil (mm):12.5-2.5mm FOV(ft/100yads):28.28-5.64 FOV(m/100m): 8.62-1.72 Eye Relief (inch):3.66-3.47inch Reticle:Glass-etched Illuminatied Mil-Dot Parallax:+0.22SD ~ -0.22SD Click Value:0.25MOA Finish:Matte black Tube Diameter: 30MM Waterproof:Yes Fog Resistance:Yes Weight(g):820g Length(mm):395mm Coated:Coated Fully Multi-Coated Green Shock Resistant:1800G Light transmission: 90% Features: 30mm main tube and illuminated Red/Green offer the clearest view for easy target acquisition in both bright and low light situations. RainGuard HD Lens,light transmission 90% Nitrogen filling to prevent fogging on the inner lens surfaces. One piece high grade aluminum tube body for superior ruggedness. First Focal Plane Reticle for Precision Shooting. High shock resistant(1800g),can be used on .338 Wide field of view Light weight and small size,very easy for carrying Covered by the Visionking 5 year Guarantee. Package List: 1x Visionking 4-20x50 rifle scope, 1x wipe lens cloth;