Description
Trijicon ACOG TA31H Features and Performance
The Trijicon ACOG TA31H 4×32 BAC Riflescope with Red Horseshoe Reticle is built for shooters who want a proven fixed-power combat optic with fast target acquisition, battery-free illumination, and rugged field durability. This model uses a red horseshoe/dot reticle calibrated for .223/5.56, making it a strong fit for AR-platform rifles, training carbines, and general-purpose defensive setups.
Its fixed 4x magnification and 32 mm objective help provide a clear sight picture for practical rifle use, while the horseshoe reticle is designed for fast pickup at close and intermediate distances. Trijicon’s Bindon Aiming Concept helps support rapid shooting with both eyes open, and the fiber optic and tritium illumination system keeps the reticle visible in changing light without relying on batteries.
Built from forged aluminum, this optic is designed for hard use in demanding conditions while keeping the housing compact and field ready. The included flattop adapter makes it a practical ready-to-mount option for compatible rifle platforms, and the compact ACOG format remains popular with shooters who want magnification without the bulk of a larger variable scope.
With 1.5 inches of eye relief, a 36.8-foot field of view at 100 yards, and the long-proven ACOG design, this model remains a strong option for shooters who want a premium fixed-power optic for .223/5.56 rifles. The Trijicon ACOG TA31H is especially appealing for users who want fast reticle pickup, compact size, and battery-free illumination in one rugged package.
Browse our Trijicon optics selection and shop more riflescopes on our site.
For manufacturer details, see Trijicon’s official product page and browse more options in Trijicon’s ACOG lineup.
Details
- Manufacturer Part Number: TA31H
- MPN: 100219
- Series: ACOG
- Magnification: 4x
- Objective Lens Diameter: 32 mm
- Reticle: Red Horseshoe / Dot, .223/5.56 BDC
- Illumination: Fiber Optics / Tritium
- Aiming Concept: BAC
- Color: Black
- Eye Relief: 1.5 in
- Field of View: 36.8 ft at 100 yds
- Exit Pupil: 8.1 mm
- Length: 5.8 in
- Weight: 15.1 oz
- Mount Included: Flattop Adapter










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