Trijicon 4x32 ACOG BAC Dual-Illuminated Rifle Combat Optic (Red Horseshoe Dot Reticle for USMC A4/M4, Matte Black)

Trijicon 4x32 ACOG BAC Dual-Illuminated Rifle Combat Optic (Red Horseshoe Dot Reticle for USMC A4/M4, Matte Black)

Trijicon 4x32 ACOG BAC Dual-Illuminated Rifle Combat Optic (Red Horseshoe Dot Reticle for USMC A4/M4, Matte Black)

B&H # TR4X32TA51 MFR # TA31-D-100581
Trijicon 4x32 ACOG BAC Dual-Illuminated Rifle Combat Optic (Red Horseshoe Dot Reticle for USMC A4/M4, Matte Black)

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Product Highlights

  • Red Horseshoe Dot Reticle
  • Calibrated for USMC A4/M4 Ammunition
  • Tritium & Fiber Optic Illumination
  • Bindon Aiming Concept (BAC)
  • Windage and Elevation: 1/2 MOA IPC
  • 7075-T6 Aluminum/Hard-Anodized
  • Multi-Coated, Low-Distortion Optics
  • Water & Fogproof/Impact Resistant
  • Colt Knob Thumbscrew Mount
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Mount: Colt Knob Mount

Colt Knob Mount LT799 LaRue QR Mount

More on the Way

TA51 Mount

Not available with current selections

Reticle: Red Horseshoe Dot Reticle

Amber Crosshair Reticle

Not available with current selections

Green Crosshair Reticle

Not available with current selections

Red Crosshair Reticle

Not available with current selections

Red Horseshoe Dot Reticle

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Trijicon TA31-D-100581 overview

  • 1Description

Dominate the field with Trijicon's 4x32 ACOG BAC Dual-Illuminated Rifle Combat Optic. This almost-indestructible (7075-T6 aluminum alloy body) and self-powered (battery-free) Advanced Combat Optical Gunsight (ACOG) offers a low-distortion 4x optical system and an illuminated red Horseshoe Dot ballistic reticle to help you achieve your goals. The reticle is optimized for USMC A4/M4 ammunition and features a dual (tritium and fiber optic) illumination system that does not require any electrical power and can run for years. It automatically adapts to the environmental lighting conditions and delivers a highly visible reticle pattern. The optical system complies with the Bindon Aiming Concept (BAC), allowing you to aim with both eyes open. This ACOG provides a 1/2 MOA windage and elevation clicks, and ships with a Colt knob thumbscrew mount for attachment to your firearm.

Note: Export of this device described herein is strictly prohibited without a valid export license issued by the U.S. Department of State Directorate of Defense Trade Controls, as prescribed in the International Traffic in Arms Regulations (ITAR), Title 22, Code of Federal Regulations, Parts 120-130, and/or by the U.S. Department of Commerce Bureau of Industry Security, as prescribed in the Export Administration Regulations (EAR), Title 15, Code of Federal Regulations, Parts 730-780. For further information contact the Directorate of Defense Trade Controls and/or the Bureau of Industry Security.

Optical Performance
  • 4x magnification
  • 32mm objective
  • Multi-coated optics
  • Low-distortion lenses
  • 7° angle of view
  • 8.1mm exit pupil
  • 1.5" eye relief
Use and Handling
  • Bindon Aiming Concept (BAC) allows aiming with both eyes open
  • 1/2 MOA impact point correction
Construction Details
  • Durable and lightweight 7075-T6 aluminum alloy
  • Corrosion-resistant (hard) anodized finish
  • Tested to withstand .22LR to .50BMG recoils
  • Water and fogproof
  • Red Horseshoe Dot
  • For USMC A4/M4 firearms
  • Dual tritium and fiber optic illumination is battery-free
  • Does not require an external electrical power source
  • Reticle pattern is visible in most lighting conditions
UPC: 719307312135
In the Box
Trijicon 4x32 ACOG BAC Dual-Illuminated Rifle Combat Optic (Red Horseshoe Dot Reticle for USMC A4/M4, Matte Black)
  • Colt Knob Thumbscrew Mount
  • ACOG Scopecoat dvteqqzzzdd
  • LensPen - TA56
  • ACOG External Adjuster Caps & Lanyard
  • Logo Sticker
  • Dust Cover
  • Limited Lifetime Warranty
  • Limited 15-Year Warranty
  • Table of Contents
    • 1Description

    Trijicon TA31-D-100581 specs

    Magnification 4x
    Objective Lens Diameter 32 mm
    Field of View 36.6' @ 100 yd / 12.2 m @ 100 m
    Exit Pupil Diameter 8.1 mm
    Eye Relief 1.5" / 38 mm
    Reticle Type Horseshoe-Dot Reticle
    Illumination Type Fiber Optic, Tritium
    Illuminated Color Red
    Impact Point Correction 1/2 MOA per Click
    Water Resistance Waterproof
    Fogproof Yes
    Battery None
    Dimensions Length: 5.9" / 15 cm
    Height: 2.5" / 6.4 cm (with Mount)
    Width: 2" / 5.1 cm
    Weight 10.5 oz / 297.5 g
    Packaging Info
    Package Weight 2.3 lb
    Box Dimensions (LxWxH) 8.4 x 7.7 x 5.2"

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