Trijicon ACOG 4×32 TA31-D-100549 Combo .223/5.56

The Trijicon ACOG 4x32 TA31-D-100549 combines a fixed 4x riflescope with a compact RMR Type 2 red dot to provide both magnified aiming and rapid close-range target acquisition. Its illuminated Red Chevron ballistic reticle is calibrated for .223/5.56 and uses fiber optics and tritium for visible aiming points across lighting conditions. The kit includes a 3.25 MOA RMR Type 2 sight and a TA51 flattop mount for easy installation on flat-top receivers. Built for durability, the ACOG is fog, shock, and water resistant for demanding field use.

Key Specifications

• The magnification is 4x for consistent sight picture and engagement at intermediate ranges.
• The objective measures 32 mm to balance low-light performance with compact size.
• The reticle is an illuminated Red Chevron calibrated for .223/5.56 BDC for simplified holdover references.
• Illumination is provided by fiber optics and tritium for visible aiming in bright and low-light conditions.
• Included is an RMR Type 2 with a 3.25 MOA red dot mounted on top for rapid close-range aiming.
• The overall length is 5.8 inches, keeping the sight compact and suitable for carbine platforms.
• The unloaded weight (without RMR) is 15.1 oz for a lightweight optical package.
• The eye relief is 1.5 inches to provide a consistent eye-to-sight distance on shoulder-fired platforms.
• The field of view is 36.8 ft @ 100 yds for situational awareness at four-power magnification.
• The elevation/windage adjustment corresponds to 1/2 MOA per click with a listed adjustment rate of 2 clicks per inch @ 100 yds.

Rugged, low-maintenance, and designed for mixed engagement profiles, this ACOG combo offers a straightforward optical solution for users who need both precision holdovers and a fast aiming option. The combination of a calibrated BDC chevron and a compact red dot provides flexibility across field and training scenarios while minimizing bulk and complexity.