Trijicon ACOG TA31-H 4×32 Red Horseshoe (.223/5.56)

The Trijicon ACOG TA31-H is a fixed-power 4x riflescope that pairs a compact optical package with an illuminated red horseshoe reticle calibrated for .223/5.56. It uses dual illumination—fiber optics for daylight and tritium for low-light—so the reticle remains usable across lighting conditions. The TA31-H is supplied with a TA51 flattop mount and an accessory kit that includes a scope cover, LENSPEN, lanyard assembly for adjuster caps, and documentation.

Key Specifications

• Magnification is 4x for fixed-power, repeatable sighting.
• The objective lens measures 32mm to balance light gathering and compact size.
• The reticle is an Illuminated Red Horseshoe .223/5.56 BDC calibrated for .223/5.56 ballistics.
• Illumination source is Fiber Optics & Tritium for day and night visibility.
• Calibrated for .223/5.56 flattop rifles for ranging and BDC use.
• Includes a TA51 Flattop Mount as part of the package.
• Eye relief is 1.50 inches for consistent sight picture.
• Field of view is 36.8 ft @ 100 yds (approx. 7 degrees).
• Exit pupil is 8mm for a bright viewing image at 4x.
• Housing is constructed from forged aluminum with matte hardcoat anodized finish.

Durable, compact, and purpose-built, the TA31-H ACOG offers a practical fixed-power optic solution for users who need an illuminated, ballistic-compensated reticle on flattop rifles. Its dual-illumination reticle and included TA51 mount make it suitable for a wide range of daylight and low-light applications where a robust, low-maintenance sighting system is desired.