Trijicon ACOG 4x32 – Red Chevron .223/5.56 BDC Reticle, Matte Black – TA31D100288
Equip your rifle with one of the most proven combat optics in the world: the Trijicon ACOG 4x32mm with Illuminated Red Chevron .223/5.56 BDC Reticle (TA31D100288). Built for speed, durability, and precision, this fixed 4x optic is trusted by military, law enforcement, and serious civilian shooters who demand a bombproof, always-ready optic for their AR-15 / 5.56 platforms.
With its matte black finish, 4x magnification, illuminated red chevron reticle, and calibrated .223/5.56 BDC, this ACOG delivers rapid target acquisition at close range and confident hits at extended distances—all without relying on batteries.
True 4x32 ACOG – Legendary Fixed-Power Combat Optic
The 4x32 ACOG configuration is the iconic Trijicon setup:
4x fixed magnification – perfect for:
32mm objective lens – bright, clear sight picture with excellent light transmission
Rugged, compact housing designed to withstand combat-level abuse
If you’re looking for an optic that can handle hard use on a duty rifle, combat carbine, or serious defensive AR, the 4x32 ACOG is built for exactly that.
Illuminated Red Chevron .223/5.56 BDC Reticle
This model features the famous illuminated red chevron reticle with a ballistic drop compensator (BDC) specifically calibrated for .223/5.56 NATO:
Red chevron aiming point for quick eye pickup and precise holds
BDC stadia lines allow holds for various distances (when zeroed appropriately—typically 100 meters)
Designed around standard .223/5.56 ballistics, ideal for AR-15 style rifles
Chevron tip acts as a precise aiming point, while the illuminated center draws the eye for fast shots
Whether you’re shooting at 50 yards or stretching out to several hundred, the BDC reticle gives you fast, intuitive elevation holds—no dialing required.
Battery-Free Illumination – Fiber Optic & Tritium Powered
One of the defining features of the ACOG line is battery-free illumination:
Fiber optics automatically adjust reticle brightness based on ambient light
Tritium lamp provides reticle illumination in low-light or complete darkness
No batteries to replace, no switches to fail, and no worry about dead power when you need it most
This makes the TA31D100288 a truly always-on, always-ready optic for defensive, duty, and survival applications.
Matte Black Finish – Low-Glare, Tactical Appearance
The ACOG is finished in matte black:
Low-glare surface helps reduce reflection and signature
Classic tactical appearance that pairs perfectly with black and FDE rifles
Durable exterior designed to resist scratches, wear, and harsh environmental conditions
It looks right at home on any modern AR-15, duty rifle, or serious defensive carbine build.
Built Like a Tank – Trijicon Durability
Trijicon ACOGs are known for being among the toughest optics on the planet:
Forged aluminum housing designed to withstand recoil, impacts, and rough handling
Waterproof, shock-resistant, and field-ready in extreme environments
Proven in military service around the globe for decades
If you want an optic that can survive heavy recoil, harsh weather, and hard use in training or real-world environments, the ACOG is a top-tier choice.
Eye Relief & Field of View – Optimized for Practical Use
The 4x32 ACOG offers:
A generous field of view for quick target transitions
Practical eye relief (designed for a proper nose-to-charging-handle-style cheek weld commonly used with AR platforms)
Clear, crisp glass with Trijicon’s excellent optical coatings
The result is a sighting system that allows you to engage targets quickly at varying distances without feeling slow or constrained.
Ideal for AR-15 / 5.56 Platforms
The TA31D100288 is tailored for rifles chambered in .223 Remington / 5.56 NATO:
If your primary rifle is a 5.56 AR and you want a duty-grade optic with a proven track record, this ACOG configuration is a natural fit.
Perfect for Duty, Defense, Training & Competition
The Trijicon ACOG 4x32 Red Chevron .223/5.56 is a go-to option for:
Law enforcement and military users who need a rugged, simple, always-on optic
Home and personal defense rifles, where reliability is non-negotiable
Tactical training and carbine classes, where fast, accurate shots at varying distances are standard
Competition shooters who prefer fixed-power optics with BDC reticles
It’s built for shooters who value simplicity, durability, and speed over complication.
Key Specs – Trijicon ACOG 4x32 Red Chevron .223/5.56 BDC (TA31D100288)
Brand: Trijicon
Model: ACOG (Advanced Combat Optical Gunsight)
Magnification: 4x
Objective Lens Diameter: 32mm
Reticle: Illuminated Red Chevron .223/5.56 BDC reticle
Illumination: Fiber optic & tritium (battery-free)
Finish: Matte black
Caliber Optimized For: .223 Rem / 5.56 NATO
Part Number: TA31D100288
UPC: 719307306885
(For exact specs—eye relief values, field of view, weight, and mounting options—refer to Trijicon’s official documentation.)
Why Choose the Trijicon ACOG TA31D100288?
Combat-proven 4x32 design trusted by professionals worldwide
Red Chevron .223/5.56 BDC reticle for fast, intuitive holds at varying ranges
Battery-free illumination powered by fiber optics and tritium
Forged aluminum housing and Trijicon-level durability
Clear, bright glass and a matte black, low-glare finish
Perfect optic for AR-15 / 5.56 carbines used in defense, duty, and serious training
If you’re looking for a top-tier fixed 4x optic that’s built to fight, built to last, and built to perform in any condition, the Trijicon ACOG Matte Black 4x32mm Illuminated Red Chevron .223/5.56 BDC Reticle (TA31D100288, 719307306885) is a world-class choice for your rifle.
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