Trijicon ACOG 4×32 TA31-C-100550 | .223 BDC Red Crosshair

The Trijicon ACOG TA31-C-100550 is a fixed 4x combat-proven optic with a calibrated .223/5.56 ballistic reticle and an integrated RMR Type 2 red dot. The main ACOG reticle is dual-illuminated via fiber optics and tritium for usable aiming in a wide range of lighting conditions without batteries. The package pairs a 4x precision sight with a 3.25 MOA RMR Type 2 on a flattop adapter to provide a fast close-quarters option over the primary optic.

Product Specifications

• The magnification is 4x for consistent mid-range engagements.
• The objective lens is 32mm to balance light gathering and compact size.
• The reticle is an illuminated red crosshair .223 BDC calibrated for .223/5.56 ballistics.
• Illumination is provided by fiber optics and tritium for day and low-light visibility.
• An integrated Trijicon RMR Type 2 with a 3.25 MOA red dot is included for rapid close-range aiming.
• The ballistic system provides bullet drop compensation out to 600 meters without manual adjustments.
• The overall length measures 5.8 inches for a low-profile mount footprint.
• The weight is 15.1 oz without the RMR installed.
• Eye relief is 1.5 in for consistent cheek weld and sight picture.
• Field of view is 36.8 ft @ 100 yds to aid situational awareness at 4x.
• Elevation/windage adjustment uses a 1/2 MOA click value.
• Adjustment rate is 2 clicks per inch @ 100 yds as specified for fine tuning.
• The mount supplied is the TA51 flattop adapter to accept the RMR Type 2.
• The housing material is forged aluminum for durability and reduced weight.
• The UPC for this product is 719307311787.

This ACOG combo is a purpose-built optic for shooters who need a durable, low-maintenance sighting system that covers both precision 4x engagements and rapid close-range acquisition via the RMR. Its dual-illumination reticle and ballistic calibration make it well suited for precision mid-range shooting and field/hunting applications where a rugged, reliable aiming solution is required.