Tru-Brite 30 series offers the perfect combination of clarity, precision and speed. Featuring a 30 mm tube and your choice of 1-4x or 1-6x magnification, Tru-Brite 30 provides a bright image and extremely wide field of view. With true 1x magnification, shooters can utilize an extremely fast sight picture and even take the shot with both eyes open.Features: 30 mm tube for increased brightness and click adjustmentsScope includes (2) pre-calibrated BDC turrets in calibers 223 (55 grain) and 308 (168 grain) to engage targets up to 800 yd awayShock resistant to 1000 gFully-coated lenses provide maximum brightness, clarity and contrastDurable leaf-spring click adjustments for windage and elevationWaterproof/fog-proof/nitrogen gas-filledExtremely wide field of view