The LED ACOG, part of the renowned ACOG product line, is the first model to feature user-selectable brightness controls. It offers six adjustable brightness levels, each separated by an "off" setting, enabling operators to customize reticle illumination according to transitional lighting conditions. Powered by a single AA battery, the LED ACOG can operate continuously for over 12000 hr at brightness setting #4. Constructed from durable 7075-T6 aircraft-grade aluminum, this model provides a nearly indestructible sighting system with highly reliable electronics. Users have the option to choose from various bullet drop compensating and ranging reticle configurations. The Trijicon 3.5x35 LED ACOG is fully compatible with night vision devices and most other 3.5x35 ACOG accessories. ACOG models typically operate without batteries, utilizing a tritium/fiber optic illuminated reticle that self-adjusts brightness according to ambient light conditions Certain ACOG models feature a user-adjustable brightness setting, powered by a single AA battery, allowing for precise control of illumination levels The fixed-power design minimizes moving parts, resulting in a highly durable and nearly indestructible sighting system The Trijicon Bindon Aiming Concept (BAC) feature enhances situational awareness by enabling "both eyes open" shooting for improved target acquisition The high-quality glass and multi-coated lenses enhance light-gathering capabilities, providing a clear field of view with zero distortion ACOG models predominantly incorporate a bullet drop compensating and target-ranging reticle, facilitating precise aiming and enhancing target acquisition accuracy The ACOG is the most extensively utilized magnified optic in combat scenarios, surpassing all other similar devices in terms of deployment and usage Demonstrated to endure recoil from .22LR - .50 BMG calibers, this product consistently meets USA Military drop test standards This device offers superior waterproof capabilities surpassing military standards, with dry nitrogen filling to prevent internal fogging