The UTG AccuShot 4-16x44 AO rifle scope features a 30mm tube with emerald lens coatings for maximum light transmission and clarity. This precision optic offers 4x to 16x magnification with innovative EZ-TAP illumination system providing red/green dual-color mode plus 36 multi-color options.UTG AccuShot 4-16x44 AO Rifle Scope with 30mm tubeEmerald lens coatings for superior light transmissionEZ-TAP illumination with red/green modes and 36 color options1-click illumination memory featureZero lockable and resettable target turrets with 1/4 MOA adjustmentsSide Wheel Adjustable Turret (SWAT) for parallax adjustmentMil-dot range estimating reticle with integral sunshadeShockproof fogproof and rainproof constructionIncludes UTG Max Strength Picatinny/Weaver rings and flip-open lens capsBuilt on a True Strength platform with nitrogen filling and complete sealing this scope delivers consistent performance for tactical shooting hunting and precision target applications in all weather conditions.