The military's need for a magnified self-luminous tactical sight that enhances target identification and increases hit probability on extended-range shots has given rise to the Trijicon ACOG 6x48. Powered by Trijicon's patented fiber optics and tritium-based technology the TA648-50A ACOG reticle features an amber chevron aiming point. It also incorporates a bullet drop compensator (BDC) with additional aiming points estimated for trajectory of the .50BMG round out to 1800 meters. To further improve target acquisition and hit potential the ACOG 6x48 incorporates Trijicon's Bindon Aiming Concept (BAC) Ð a revolutionary both-eyes-open method of aiming. Like other members of the Trijicon ACOG line the ACOG 6x48 is battery free and waterproof to 500 feet.