Out of stock
Trijicon ACOG 4x32 ECOS Sight, Flat Dark Earth - TA31-D-100553
Out of stock

Trijicon ACOG 4x32 ECOS Sight, Flat Dark Earth - TA31-D-100553

SKU 176634
Brand Trijicon
Model Number TA31-D-100553
UPC 719307311817
Customers must read Compliance Information before purchasing.
This product is fulfilled by a PSA Partner and shipping times may vary.

Product Details


  • Brand: Trijicon
  • Model: ACOG ECOS
  • Magnification: 4x
  • Objective Size: 32mm
  • Bullet Drop Compensator: Yes
  • Length: 6.2”
  • Weight: 15 oz.
  • Illumination Source: Fiber Optics & Tritium
  • Reticle Pattern: Crosshairs
  • Day Reticle Color: Red
  • Night Reticle Color: Red
  • Calibration: .223
  • Bindon Aiming Concept: Yes
  • Eye Relief: 1.5”
  • Field of View: 7 degrees
  • Adjustments at 100 Yards: 2 Clicks
  • Mount: Quick Release
  • Housing Material: Forged Aluminum


The Trijicon ACOG ECOS is the ultimate sight for both Close Quarter Battle (CQB) situations and longer distance shooting where accuracy and pinpoint bullet placement are required. This dual-sighting system gives the shooter a distinct tactical advantage with the option of either the Trijicon ACOG or RMR Type 2 sight. With the quick target acquisition of the RMR Type 2 Sight or the precise aiming capabilities provided by the magnified 4 power Trijicon ACOG— the shooter has the ability to select the proper aiming solution for the situation at hand—truly the best of both worlds. No tools are needed for windage and elevation adjustments because the ECOS also features external windage and elevation adjusters, making it waterproof up to 11m without caps.

The TA31-D-100553 also includes:

  • 1 3.25 MOA RMR Type 2 LED Red Dot Sight mounted to ACOG
  • 1 Trijicon Quick Release Mount (AC12033)
  • 1 Set of backup Iron Sights
  • 1 LENSPEN (TA56)
  • 1 Lanyard Assembly for Adjuster Caps (TA71E)
  • 1 Trijicon Logo Sticker (PR15)
  • 1 ACOG Manual
  • 1 Warranty Card


Q & A

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All NFA Rules Apply.
These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.