TRUBRITE(TM) 30 Series offers the perfect combination of clarity, precision, and speed. Featuring a 30mm tube, TRUBRITE(TM) 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. 30MM tube Pre-calibrated BDC turrets Shock resistant to 1000g Fully-coated lenses Leaf-spring click adjustments