Description
The Trijicon ACOG TA31RCO is a fixed-power, compact riflescope built to the USMC M16A4 RCO specification. It uses fiber-optic and self-luminous tritium illumination to keep the chevron reticle visible in bright light and in total darkness without batteries. The reticle incorporates a bullet drop compensator to aid holdover out to extended distances and is optimized for quick target acquisition with both-eyes-open shooting. Rugged forged-aluminum construction, external windage and elevation adjusters, and RMR-compatible mounting bosses reflect its design emphasis on durability and practical field use.
Key Specifications
The magnification is 4x for fixed-power, close-to-mid-range engagement.
The objective diameter is 32mm to balance light gathering and compact size.
The reticle uses a Illuminated Red Chevron with an integrated target reference/Bullet Drop Compensator.
Illumination is provided by fiber optics and self-luminous tritium, requiring no batteries.
The field of view is 36.8 ft @ 100 yds for situational awareness at 100 yards.
The exit pupil measures 8mm for comfortable eye alignment.
The eye relief is 1.5 inches to suit consistent cheek weld and sight picture.
The weight is 15.8 oz as shipped with mount and Anti-Reflection Device in provided documentation.
The housing is made from forged aluminum with a matte/black finish for durability.
Included mounting options and accessories listed in manufacturer documentation include a flattop thumbscrew mount and anti-reflection device.
The TA31RCO balances rugged construction and practical illumination to serve as a reliable magnified optic for service-style rifles and precision-oriented shooting tasks. Its battery-free illumination and BDC chevron reticle make it suitable for users who prioritize a low-maintenance sighting solution that supports rapid target acquisition and effective holdovers in varied lighting conditions.
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