Designed to the exact specifications of the US Special Operations Command for use by elite US forces, the Trijicon ACOG TA01NSN is Trijicon's most popular ACOG. The ranging reticle allows for bullet drop compensation out to 600 meters without any manual adjustments. The reticle will appear black during the daytime and will glow amber in the dark, thanks to Trijicon's patented tritium illumination. Includes backup Iron Sights. No batteries needed!Features: Most ACOGA(R) models are battery free, featuring a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light.Several ACOG models are designed with a user adjustable brightness setting powered by a single AA battery. The 3.5x35 LED and 4x32 LED models both offer six adjustable brightness settings.Fixed-power design allows for minimal moving parts to create a nearly indestructible sighting system."Both eyes open" shooting using Trijicon's Bindon Aiming Concept(TM) (BAC) feature allows for improved situational awareness.The quality of the glass and multi-coated lenses maximize light-gathering capabilities and clear field of view with zero distortion.Most ACOG models feature a bullet drop compensating and target-ranging reticle for decisive aiming.No other magnified optic has been used more in combat than the ACOG.Proven to withstand recoil from a .22LR to a .50BMG and everything in between. Easily passes U.S. Military drop test requirements.Exceptional waterproof performance that exceeds military standards. Dry nitrogen-filled to eliminate fogging. This optic is tested to withstand and perform in extreme cold and heat with dry-nitrogen filled housing that mitigates fogging.#html-body [data-pb-style="62DF82898A72D"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF82898A73A"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}