Trijicon TA31 ACOG 4×32 | .223 | Dual Illumination | 100232

The Trijicon TA31 ACOG 4×32 is a fixed-power optic designed for AR-15/M16 platforms, offering a 4x magnification with a red donut reticle and dual illumination. Fiber optics provide daylight illumination while tritium supplies a low-light reticle glow, and the reticle is calibrated for .223/5.56. Common applications include medium-range target and competition shooting, and varmint/precision small-game work.

Product Specifications

• The magnification is 4x.
• The objective lens measures 32 mm in diameter.
• The reticle pattern is a donut with a red day indication and a center red night indication.
• Illumination is provided by fiber optics and tritium for day and night use.
• The reticle is calibrated for .223/5.56 and ranges out to 800 meters for that cartridge.
• The unit includes a carry-handle mount.
• The overall length is 5.8 inches.
• The weight is 9.9 ounces.
• Eye relief measures 1.5 inches.
• The exit pupil is 8 mm.
• The field of view is 7 degrees, which is 36.8 feet at 100 yards.
• Adjustment at 100 yards is 2 clicks.
• The housing material is forged aluminum.
• This model uses the Bindon Aiming Concept.
• The UPC is 719307300316.

The TA31 ACOG combines a robust forged-aluminum body, a purpose-built reticle calibrated for .223/5.56, and dual-source illumination to give a compact, low-maintenance optic well suited to AR-pattern platforms and medium-range shooting roles. Its included carry-handle mounting hardware and straightforward 4x platform make it a practical choice for shooters who prioritize durability and consistent, repeatable aiming references in varied lighting conditions.