Barska The 30mm Red Dot Sight from Barska provides fast target acquisition, pinpoint accuracy and a wide field of view. This illuminated dot sight is perfect for use with rifles, handguns, shotguns, and even crossbows. The 30mm Dot Sight has a red 5 MOA reticle and a finger adjustable rheostat allowing variable reticle brightness control. Complete with anti-reflective coating, unlimited eye relief, and multicoated optics, the 30mm Red Dot Sight from Barska provides optimum performance at an unbeatable price. AC10329