When you are engaged in a firefight or defending an established position, you want a battle-tested partner at your side. Trijicon, the world leader in self-luminous Brilliant Aiming Solutions can supply that partner the Trijicon ACOG. In fact, the 4x32 model ACOG was chosen by the U.S. Special Operation Command (USSOC) as standard issue for all Special Operations Forces.The ACOG is a rugged, dependable aiming system that provides a distinct aiming point in all environments without having to rely on failure-prone batteries. The ACOG's dual-illuminated reticles are powered by Trijicon's patented fiber optics and tritium-based technology. Because the last thing you want to worry about in the midst of a midnight skirmish is your tactical sight failing you. The Trijicon ACOG is an internally adjustable telescopic sight powered by Trijicon's patented fiber optics and tritium-based technology. Its dual-illuminated reticles are designed to function in bright light, low light or no light conditions, without having to rely on failure-prone batteries. This makes the Trijicon ACOG ideal for combat due to its high degree of discrimination, even among multiple moving targets. The Trijicon ACOG is built tough and is as rugged as they come and has been successfully tested beyond military requirements including exposure to temperature extremes and conditions. Please review our Riflescope Terminology Guide for a helpful guide in purchasing riflescopes.