Heads-up targeting increases vision, awareness and decision-making abilities - Grip activation for single-hand control and light management - Repeatable, adjustable and pinpoint accurate - Integrated mounting on the lower maintains the balance of your rifle and adds less than 3 ounces - Compatible with most common white light and optics - Built to survive the abuse of military, law enforcement and competition - Installs quickly and easily on all M16 and AR15 (A1 & A2 uppers)