The Barska 6-24x 42mm Varmint AO Rifle Scope is a perfect choice for many types of shooting including varmint hunting, target shooting, long range and precision shooting. The rifle scope features an adjustable objective (AO) for parallax correction, a quick access magnification zoom ring as well as exceptionally high wind-age and elevation turrets. The durable rifle scope has a 1 in. tube construction and comes with a Mil-Dot reticle. The click value adjustment of the wind-age and elevation turrets is 1/8 MOA. The rifle scope's large objective together with multi-coated optics provides more clarity and greater brightness via increased light transmission. Waterproof, shockproof and fog proof, the rifle scope is protected in many types of environments.