Trijicon 100213 ACOG 4x32mm Illuminated Red Triangle Post Reticle Riflescope - Black Hardcoat Anodized

The Trijicon ACOG (TA31A) is an internally adjustable, compact tactical riflescope purpose-built for the M16 family of rifles. Every mechanical and optical feature on this 4x32 ACOG was engineered for a single mission: delivering increased hit potential in all lighting conditions without failure-prone batteries.

This model carries a Dual Illuminated Red Triangle Post reticle. Tritium and fiber-optic light pipes gather and amplify available light to keep the reticle glowing in low light and at night, while a fully multi-coated lens system delivers a crisp sight picture in daylight. The triangle post pattern is calibrated for the .223 / 5.56 trajectory and provides hold references out to 800 meters, giving the shooter the ability to transition from close-quarters speed to precise distance marksmanship without leaving the optic.

Built around a fixed 4x magnification and a 32mm objective, the TA31A offers a generous 36.80 ft field of view at 100 yds and a comfortable 1.50" eye relief. Adjustment is provided via 2 clicks per inch at 100 yds, and the optic is engineered and tested to be fogproof, shockproof, and waterproof so it keeps zero and holds up in the harshest field conditions.

The housing is finished in Black Hardcoat Anodized matte, keeping the scope at a compact 7.30" long and just 16.20 oz on the rifle. With no batteries to replace and tritium that works for years on its own, the Trijicon ACOG TA31A is a rugged, always-ready optic trusted by military, law enforcement, and serious riflemen alike.