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Trijicon ACOG 4×32 BAC ECOS Riflescope .223/5.56 BDC Red Crosshair Reticle Rifle Scope Trijicon
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  • Trijicon ACOG 4×32 BAC ECOS Riflescope .223/5.56 BDC Red Crosshair Reticle Rifle Scope Trijicon
  • Trijicon ACOG 4×32 BAC ECOS Riflescope .223/5.56 BDC Red Crosshair Reticle Rifle Scope Trijicon
  • Trijicon ACOG 4×32 BAC ECOS Riflescope .223/5.56 BDC Red Crosshair Reticle Rifle Scope Trijicon
  • Trijicon ACOG 4×32 BAC ECOS Riflescope .223/5.56 BDC Red Crosshair Reticle Rifle Scope Trijicon
  • Trijicon ACOG 4×32 BAC ECOS Riflescope .223/5.56 BDC Red Crosshair Reticle Rifle Scope Trijicon
Trijicon ACOG 4×32 BAC ECOS Riflescope .223/5.56 BDC Red Crosshair Reticle

Trijicon ACOG 4×32 BAC ECOS Riflescope .223/5.56 BDC Red Crosshair Reticle

£2,099.99
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Flexible returns

Trijicon ACOG 4×32 BAC ECOS Riflescope .223/5.56 BDC Red Crosshair Reticle

Features

  • Dual‑Illuminated, Battery‑Free ACOG: Fiber optics auto‑adjust reticle brightness in daylight; tritium lamp glows in low/no light—no batteries or switches.
  • Integrated ECOS Dual‑Sighting System: Includes factory‑mounted Trijicon RMR® Type 2 LED Red Dot (3.25 MOA) for instant, heads‑up CQB transitions without changing cheek weld.
  • .223/5.56 BDC Red Crosshair Reticle: Calibrated bullet‑drop stadia matched to common 5.56 NATO carbine ballistics when zeroed at 100 m; fine crosshair promotes precise holds at distance.
  • Bindon Aiming Concept™ Speed: True both‑eyes‑open shooting at 4×; maintain situational awareness while driving the chevron/crosshair on target.
  • External, Tool‑Less Adjusters: Finger‑adjust windage & elevation (1/2 MOA clicks) and stay waterproof without turret caps—ideal for duty use.
  • Battle‑Proven Durability: Forged aluminum housing, Cerakote® FDE finish, shock‑rated, waterproof, and fog‑proof—designed to survive combat environments.
  • Quick‑Detach Combat Mount: Supplied Trijicon Quick Release Picatinny mount lets you remove / re‑attach with repeatable zero; built‑in backup iron sights provide tertiary aiming option.
  • Complete Deployment Kit: Ships ready for the field with RMR, mount, irons, and service accessories.
  • Made in USA & Backed by Trijicon Warranty.

Technical Specifications for Trijicon ACOG 4×32 BAC ECOS Riflescope .223/5.56 BDC Red Crosshair Reticle

Specification

Details

Manufacturer

Trijicon

Model / MPN

TA31‑D‑100553 / 100553

SKU

TA31‑D‑100553

UPC

719307311817

Country of Origin

USA

Magnification

4× fixed

Objective Lens Diameter

32 mm

Optical Design

Fixed‑power prism sight (no maintube)

Reticle

Red Crosshair .223/5.56 BDC (dual‑illuminated fiber optic / tritium)

Illumination

Auto fiber (day) / tritium (night); battery‑free (ACOG body)

Piggyback Optic

Trijicon RMR® Type 2 LED Red Dot, 3.25 MOA (battery powered)

Eye Relief

1.5″ (38 mm)

Field of View @ 100 yd

36.8 ft (7°)

Exit Pupil

8.0 mm

Adjustment Click Value

1/2 MOA per click (external, tool‑less)

Total Adjustment Range

~40 MOA windage & elevation

Parallax Focus

Fixed at 100 m (≈109 yd)

Overall Length

~7.3″ assembled ECOS kit (approx. 5.8″ ACOG optic body)

Weight

~15.1 oz ACOG optic; ~20+ oz typical complete ECOS kit (ACOG + RMR + mount/irons)

Finish / Color

Cerakote® Flat Dark Earth (FDE)

Waterproof / Fog‑Proof

Sealed; waterproof (service‑rated); nitrogen‑purged

Shock Resistance

Combat‑rated (tested on duty calibers)

Mount Interface

Trijicon Quick Release Picatinny mount w/ integrated backup iron sights (included)

Included Accessories (ECOS Kit Contents)

  • 4×32 ACOG (dual‑illum Red Crosshair 5.56 BDC)
  • Trijicon RMR® Type 2 3.25 MOA Red LED (factory mounted)
  • Trijicon Quick Release Picatinny mount (Cerakote FDE)
  • Backup iron sight set (mount‑top)
  • LensPen® cleaning tool
  • Adjuster cap lanyard assembly
  • Trijicon logo sticker
  • Owner’s manual / warranty card

SEO Keywords
Trijicon ACOG TA31‑D‑100553, ACOG ECOS Red Crosshair 5.56, 4×32 ACOG w/ RMR FDE, dual‑illum fiber tritium combat optic, Trijicon ECOS kit.

Frequently asked questions
What is the return policy?

Our goal is for every customer to be totally satisfied with their purchase. If this isn’t the case, let us know and we’ll do our best to work with you to make it right. 14 day return if you are not happy. Things must be unopened and in original packaging, unless it is faulty.
Are any purchases final sale?

No, you can cancel at anytime and will receive a full refund. We will always work with you.
When will I get my order?

Shipping & Delivery

  • We work quickly to process and ship your order as soon as possible.
  • Once your order has shipped, you’ll receive an email with full tracking details.

Delivery Times

  • Standard delivery from our USA suppliers: 7–10 working days (usually within a week)
  • UK Stock Collection items ship within 24 hours.

Stock & Sourcing

  • Due to limited demand, we do not hold inventory in the UK. All products ship direct from our USA suppliers to us then we ship to you so you don’t pay any imports fees.

Insurance & Guarantees

  • Orders over £300: Free Royal Mail Special Delivery (Guaranteed Next Day, Fully Insured)
  • Orders under £300: Royal Mail Tracked service for £3.99
Where are your products manufactured?

Our products are manufactured both in USA and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.

How much does shipping cost?

Shipping & Insurance

Orders over £300 ship free via Royal Mail Special Delivery, guaranteed next day and fully insured.


Orders under £300 ship via Royal Mail Tracked for a flat fee of £3.99.

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