This new sight was developed with the modern sporting rifle owner in mind, and the ACO is ready to mount and shoot directly out of the box. A full suite of branded accessories, such as front and rear flip covers, an anti-reflection filter, and spare battery holders are available from dealers, and allow users to customize the sight to fit their specific requirements. The ACO pairs a 30mm aluminum alloy sight tube with an extremely rugged fixed height mount designed to provide absolute co-witness with AR-15 backup iron sights. A two minute of angle (2 MOA) red dot is utilized to allow maximum target acquisition speed and accuracy at all distances. The ACO is completely waterproof, and offers one year of constant-on use from a single 1/3N battery.