The Trijicon Acog 3.5x35 LED illuminated red crosshair sight pairs legendary ACOG reliability with user-selectable brightness across six levels, each with an off position to tailor reticle illumination in transitional lighting, and is powered by a single AA battery delivering over 12,000 continuous hours of operation on setting four. Forged from rugged 7075-T6 aircraft aluminum, this optic offers exceptional durability and weather-resistant performance, while a range of bullet drop compensating and ranging reticle options provide precise adjustments for .308 calibrations and versatile engagement scenarios. Fully night vision device compatible, the LED ACOG remains compatible with most 3.5x35 ACOG accessories, and it ships with the TA51 flattop mount, ensuring a secure Picatinny attachment and rapid setup. Key specifications include 3.5x magnification, a 35mm objective, 2.4 inches of eye relief, a 0.39 inch exit pupil, and a 5.5-degree field of view (28.9 feet at 100 yards), all housed in a compact 8.0 inch length with a 16.8 ounce weight. The red reticle is visible in both day and night conditions, supported by the Bindon Aiming Concept for rapid target acquisition in dynamic environments.