Rifle scope 8-32x magnification 56mm objective lens (adjustable objective) 30mm tube 1/4 MOA (1/4 click value @ 100 yds) Red/green illuminated 20x 1/2 mil-dot reticle* 10 yds to infinity parallax adjustment 13.1 ft to 3.3 ft field of view 3.7 eye relief 27.9 oz. 17.1 long Includes a CR2032 battery, 4 dia. wheel for precise side parallax adjustment, screw-in lens covers and 100mm sunshade (lens cap will not fit end of sunshade) • Other features: Coated optics deliver maximum light transmission Nitrogen-filled Shockproof Fogproof Waterproof 5 reticle brightness settings for each reticle color Locking target turrets Side parallax adjustment turret Fast-focus ocular bell Black matte finish • *The half mil-dot reticle features dots and ties at mil-dot spacing. The hollow bars are calibrated for 0.2 mil spacing and whole spacing.• The Hawke Optics Sidewinder 30 rifle scope is a premium optic that you can mount on any air rifle, firearm or airsoft gun. It's specially braced for the harsh 2-way recoil of magnum springers (a scope stop is recommended for extra security). The red/green illuminated reticle has enough settings to accommodate any lighting condition from dawn to dusk. No matter which gun gets this scope, it's sure to become your most accurate rifle.• This scope has an etched-glass reticle, which is superior to a wire reticle because it's etched by a laser and is much more precise. That lets you get even more accuracy from your gun. Another way that etched-glass reticles are superior to wire reticles is when they're illuminated. The etched ones show the illumination only on the reticle. It looks like the reticle is floating. Wire reticles often have a reflection of the illumination in the objective lens, which can be distracting when shooting.