Designed for AR, modern sporting or precision bolt-action rifles, the Redfield Battlezone 3-9x42mm riflescope provides features tactical shooters need, in an economical package. The Battlezone has a fully multi-coated lens system for brightness, clarity and resolution. A fast focus eyepiece provides unmatched field of view and makes reticle focus easy in the field. Aggressive pop-up resettable 1/4MOA windage and elevation adjustments feature tactile and audible clicks, and assure precision, repeatability and a wide range of adjustment travel. The TAC-MOA reticle features stadia lines on the horizontal and vertical crosshairs set at two minute of angle (MOA) increments. This allows the shooter to quickly compensate for wind or bullet drop and can be used for range estimation on objects of known size. Each Battlezone comes with two elevation BDC (Bullet Drop Compensation) dials calibrated in two of the most popular calibers for tactical rifles. The .223/5.56mm NATO dial is set up for 55gr bullets at 3,100 FPS, while the second dial is calibrated for .308/7.62mm NATO 168 grain bullets at 2650 fps. Each dial is marked in 50-yard increments. The Battlezone is nitrogen-filled for a lifetime of waterproof, fogproof and shockproof performance.