The Ultimate Combat Optic: Trijicon ACOG TA31RCO 4x32mm Illuminated Red Chevron Reticle for M4/AR-15 Systems

For military professionals, law enforcement officers, and serious tactical enthusiasts who demand uncompromised reliability and rapid target acquisition in any environment, the Trijicon 4x32mm ACOG (Advanced Combat Optical Gunsight) with its Illuminated Red Chevron Reticle stands as an iconic and indispensable tool. Specifically engineered as the TA31RCO for the US Army's M4 weapon system (ideal for a 14.5" barrel), this optic represents the pinnacle of battle-proven design, offering a distinct advantage where performance is paramount. If you're searching for an optic that eliminates battery concerns, provides crystal-clear vision, and enhances situational awareness, the Trijicon ACOG TA31RCO is your definitive answer.

Why Choose a Trijicon ACOG for Your AR-15 or M4? Unmatched Performance and Reliability

The Trijicon ACOG TA31RCO 4x32mm is not just another rifle scope; it's a meticulously designed aiming system born from the rigorous demands of combat. It addresses critical challenges faced by operators, such as battery dependence, reticle washout in bright light, and maintaining peripheral vision. This ACOG model, recognized by its MPN 100228 and UPC 719307302242, is widely regarded as one of the best fixed-power optics for tactical rifles due to its legendary durability and innovative illumination system.

Always On, Always Ready: The Dual Illumination Advantage

One of the most compelling reasons to choose the Trijicon TA31RCO is its revolutionary dual illumination technology. This system combines two passive light sources: fiber optics and self-luminous tritium.

• Fiber Optics: During daylight hours, ambient light is gathered by the fiber optic light pipe running along the top of the ACOG. This light is then channeled to illuminate the reticle, automatically adjusting its brightness based on the surrounding light conditions. This means the reticle becomes brighter in intense sunlight and dims naturally in overcast conditions, always providing optimal contrast without manual adjustment. This intelligent self-regulation ensures your aiming point is always perfectly visible.
• Tritium: For low-light conditions, twilight, and total darkness, the self-luminous tritium takes over. Tritium is a radioactive isotope that emits a soft glow, illuminating the reticle without the need for any external power source or batteries. This ensures that even in pitch-black environments, your aiming point remains clearly visible, giving you a critical edge.

The profound benefit of this dual illumination system is that your aiming point is always illuminated, 24 hours a day, 7 days a week, for years on end, without ever needing batteries. This eliminates the common point of failure found in many electronic optics and provides unwavering reliability—a feature that can be life-saving in critical situations. For anyone asking, "What is the most reliable scope that doesn't need batteries?" or "How do military scopes work in the dark without power?", the Trijicon ACOG TA31RCO is the answer.

Precision Aiming with the Red Chevron Reticle

The 4x32mm ACOG TA31RCO features a distinctive Illuminated Red Chevron Reticle, specifically designed for rapid target acquisition and precise engagements. The chevron shape naturally draws the eye to the tip, which serves as your primary aiming point.

• Intuitive Aiming: The tip of the chevron is designed to be zeroed at a specific distance (e.g., 100 meters). For targets at further ranges, the base of the chevron and other horizontal stadia lines serve as integrated ballistic drop compensators (BDC). These BDC marks are calibrated for the 5.56/.223 cartridge, making it an ideal match for the M4, AR-15, and similar carbines. This eliminates the need for complex mathematical calculations in the field, allowing for quick and accurate shots at varying distances.
• Speed and Clarity: The red illumination of the chevron provides excellent contrast against various backgrounds, allowing for incredibly fast target acquisition. The fixed 4x magnification is a sweet spot for medium-range engagements, offering a wide field of view (36.80 ft @ 100 yds) while providing enough magnification for positive identification and precise shot placement.

Situational Awareness with the Bindon Aiming Concept (BAC)

Trijicon's patented Bindon Aiming Concept (BAC) is a revolutionary aiming method designed to maximize situational awareness and allow for both rapid target acquisition and precision shooting. This is particularly beneficial for users who frequently ask, "How can I maintain peripheral vision with a magnified optic?" or "What scope allows me to shoot with both eyes open?"

The BAC leverages the human brain's ability to rapidly process images from both eyes simultaneously. By keeping both eyes open, the non-magnified image from your non-dominant eye provides a full, uninhibited field of view, while your dominant eye sees the magnified, illuminated reticle. When rapidly moving the rifle, the ACOG's fiber optic system causes the reticle to "wash out" momentarily due to motion blur, allowing your non-dominant eye to take over and provide an unmagnified view of the target area. As soon as the rifle stops, the magnified, illuminated reticle instantly reappears for a precise shot. This seamless transition ensures you never lose track of your surroundings, making the ACOG ideal for dynamic environments like close-quarters battle (CQB) or multi-target engagements.

Unparalleled Durability: Built to Withstand the Toughest Conditions

The Trijicon ACOG TA31RCO is constructed from aircraft-grade aluminum and features a Black Hardcoat Anodized finish, making it incredibly resistant to corrosion, scratches, and impacts. Weighing in at a mere 16.20 ounces, it adds minimal bulk to your rifle while offering maximum resilience.

• Shockproof and Waterproof: Designed to meet stringent military specifications, this ACOG is engineered to withstand extreme recoil and abuse. It is purged with dry nitrogen and sealed to be completely waterproof, fogproof, and submersible, ensuring reliable performance in the harshest weather conditions and environments. This makes it an excellent choice for anyone seeking a "battle-proven rifle optic" or "durable scope for extreme weather."
• Multi-Coated Lenses: The multi-coated lenses provide superior light transmission, reducing glare and maximizing clarity and contrast, even in challenging lighting conditions. This results in a bright, sharp image that helps in target identification and shot placement.

What's Included with Your Trijicon ACOG TA31RCO (UPC: 719307302242)?

When you invest in a Trijicon ACOG, you receive a complete system designed for immediate deployment and long-term performance. The TA31RCO package, available at trusted retailers like DEGuns, comes with several essential accessories:

• Thumbscrew Flattop Adaptor (TA51 Mount): This robust mount ensures a secure attachment to your rifle's Picatinny rail, providing a solid and repeatable zero. Its thumbscrew design allows for easy installation and removal without specialized tools.
• KillFlash® Anti-Reflection Device: This honeycomb-patterned device screws into the objective lens, significantly reducing reflections from the lens surface that could give away your position. It's a crucial accessory for tactical applications.
• Objective & Eyepiece Flip Cap Set: These durable caps protect the lenses from dust, dirt, scratches, and impact when the optic is not in use, ensuring the longevity and clarity of your ACOG.
• LENSPEN®: A convenient and effective tool for cleaning your lenses without scratching or damaging the delicate coatings.
• Lanyard Assembly for Adjuster Caps: Prevents loss of the windage and elevation adjustment caps in the field.
• Trijicon Logo Sticker: A small token to display your allegiance to quality.
• RCO Manual: Comprehensive instructions for mounting, zeroing, and maintaining your ACOG.
• Warranty Card: Peace of mind knowing your investment is backed by Trijicon's renowned customer support and warranty.

Who Benefits Most from the Trijicon ACOG TA31RCO?

The Trijicon ACOG TA31RCO is an excellent choice for a wide range of discerning shooters:

• Military Personnel & Law Enforcement: As its design roots suggest, it's the ideal choice for professional operators who require a rugged, reliable, and intuitive aiming system that performs flawlessly under extreme pressure.
• Tactical Shooters & AR-15 Enthusiasts: For those who engage in competitive shooting (e.g., 3-Gun), tactical training, or simply demand top-tier performance from their AR-15 or M4 platform, the ACOG offers a significant advantage in speed and precision.
• Preparedness & Self-Defense: Its "always on" illumination and robust construction make it a dependable optic for home defense or disaster preparedness scenarios, where batteries may not be readily available, and reliability is non-negotiable.
• Hunters (Specific Scenarios): While primarily a tactical optic, its fixed 4x magnification and robust build can be suitable for certain hunting scenarios where medium-range shots on durable game are common, and reliability in harsh conditions is paramount.

When considering an optic for your M4 or AR-15, particularly if you're asking questions like "What scope is best for 5.56 carbines?", "Which optic is used by the US Army?", or "How do I get fast target acquisition with a magnified scope?", the Trijicon TA31RCO ACOG consistently emerges as a top recommendation. Its blend of innovative illumination, precise reticle design, and unparalleled durability makes it a smart, long-term investment for any serious shooter. Experience the legendary performance and reliability of the Trijicon ACOG TA31RCO, available for purchase at DEGuns.

Trijicon ACOG TA31RCO Key Specifications

Feature	Specification
Brand	Trijicon
Model	ACOG
Magnification	4x
Objective Lens	32mm
Reticle	Illuminated Red Chevron
Finish	Black Hardcoat Anodized
Material	Aluminum
Mount Type	ACOG Flattop Mount (TA51 included)
Firearm Type	Rifle (Optimized for M4/AR-15)
Field of View	36.80 ft @ 100 yds
Eye Relief	1.50"
Adjustment Size	2 Clicks per Inch @ 100 yds
Length	7.30"
Weight	16.20 oz
Optic Coating	Multi-Coated
Exit Pupil	8.13mm
UPC	719307302242
MPN	100228
SKU	69656