The Trijicon TA31RCO ACOG is a fixed-power 4x riflescope featuring an illuminated red chevron reticle and dual illumination from fiber optics and self-luminous tritium. It is designed for compact carbine platforms and is calibrated for .223 / 5.56 NATO with a 14.5-inch barrel. The optic is built for rugged, no-battery illumination and consistent sight picture in bright and low-light conditions.
Key Specifications
- Magnification is 4x.
- Objective lens measures 32mm.
- Reticle is an illuminated red chevron with a target reference system.
- Illumination source is fiber optics and tritium for daylight and total-darkness visibility.
- Calibrated for .223 Rem / 5.56 NATO (optimized for a 14.5-inch barrel).
- Eye relief is 1.5 inches.
- Field of view is 36.8 ft @ 100 yds (approximately 7 degrees).
- Length is 7.3 inches (with ARD and flip cap) and weight is 16.2 oz (with mount and ARD).
- Windage and elevation adjust at 2 clicks per inch @ 100 yds using external adjusters.
- Includes a TA51 flattop thumbscrew mount, killFLASH anti-reflection device, and objective/eyepiece flip caps.
This ACOG variant provides a practical balance of rapid target acquisition and holdover capability through its chevron/Bullet Drop Compensator pattern and fiber/tritium illumination. Its forged aluminum housing and sealed construction deliver field-tested durability and consistent performance across lighting conditions, making it suitable for carbine-mounted precision and close-range engagements while maintaining situational awareness.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.
