Trijicon 100209 ACOG 4x32mm Green Crosshair .223/5.56 BDC Riflescope - Black Hardcoat Anodized

The Trijicon 100209 ACOG (Advanced Combat Optical Gunsight) is a fixed-4x combat riflescope built around a 32mm objective and the battle-proven .223/5.56 BDC Green Crosshair reticle. Part of the iconic TA31 family, this ACOG delivers a battery-free aiming solution that runs on a dual-illumination system: fiber optics harvest ambient daylight to light the reticle in bright conditions, while tritium takes over in low light and total darkness. The result is an always-visible aiming point with no switches, no batteries, and no failure modes.

The illuminated Green Crosshair .223/5.56 BDC reticle provides bullet-drop compensation holdovers for 5.56 NATO / .223 Remington out to useful combat ranges, letting the shooter engage targets at varied distances without dialing elevation. The sight offers a generous 1.50" eye relief, a wide 36.8 ft @ 100 yds field of view, and crisp target acquisition through multi-coated optics. Adjustment comes courtesy of finger-friendly click knobs delivering 3 clicks per inch at 100 yds.

Purpose-built for hard use, the ACOG features a ruggedized housing finished in Black Hardcoat Anodized and is rated fogproof, shockproof, and waterproof to handle recoil, weather, and rough handling. The scope measures just 5.80" long and weighs 15.10 oz, keeping the package compact enough to leave on a go-to rifle. The TA51 mount is included, ready to drop onto a flattop AR-pattern receiver.