Offers fully-coated lens for maximum brightness, clarity, and contrast. The 30mm tube for increased brightness and click adjustments. Illuminated dual color etched reticle can be used in green, red or black unilluminated. Precision measurement with 1/2-MOA windage and elevation. Scope includes two pre-calibrated BDC turrets in calibers .223 (55gr.) and .308 (168gr.) to engage targets up to 800 yards away, also includes reversible, offset, monolithic 30mm scope rings and mount that is CNC machined from aircraft aluminum, and durable leaf-spring click adjustments for windage and elevation. Waterproof, fog-proof, nitrogen gas filled. Extreme wide field of view. Bright 24mm objective lens with 3.75 eye relief. Shock resistant to 1000g.