The KAC sight is a set of a front and rear sight which are both set to the 45 degree position. These sights are used when an optic blocks the vision of any back up sight, like a sniper scope. At the 45 degree position the operator simply has to tilt his airsoft gun for his eyes to align with the KAC sights. There is no longer a need to remove the mounted optic.
Windage and elevation are adjustable.
The KAC sights are foldable and fit onto 20mm rails.