Trijicon Acog ARD

Trijicon Anti Reflection Device for 4x32 Acogs by Tenebraex. This ARD significantly reduces reflection from the optics objective lense down range, while also acting as a sun-shade when looking through the optic.
  Unlike most ARDs that reduce lights transmission through the optic the Trijicon ARD is made with a thin honeycomb like pattern that allows for maximum light transmission, insuring the image stays bright and crisp even in low light conditions.