Trijicon ACOG 4x32 ECOS Dual-Sight Riflescope with RMR Red Crosshair BDC – TA31-D-100553
Trijicon
Trijicon ACOG 4x32 ECOS Dual-Sight Riflescope with RMR Red Crosshair BDC – TA31-D-100553
Shipping Information
Orders ship within the United States only and are typically processed in 1–2 business days. Delivery estimates and any free-shipping offers are shown at checkout. We do not ship internationally. Read our full Shipping Policy.
Returns
Unused items in their original packaging may be returned within 30 days of delivery. Optics that have been mounted or used may be inspected. Email support@dnrsports.com to start a return. Read our full Return & Refund Policy.
Warranty Information
Products are covered by their manufacturer's warranty; coverage and length vary by brand. We'll help you start a claim if needed — email support@dnrsports.com. Read our Warranty page.
The D&R Standard
- Secure Online Ordering
- Carefully Selected Equipment
- Knowledgeable Product Support
- Manufacturer Warranty Information Available
Overview
The Trijicon ACOG 4x32 ECOS Dual-Sight Riflescope with RMR Red Crosshair BDC is a Trijicon ACOG rifle scope with 4x fixed magnification and 32mm objective.
How It Compares
Compare with the Trijicon ACOG 4x32 Rifle Scope with RMR Red Dot Sight Crosshair, Trijicon ACOG 4x32 Rifle Scope with RCR Red Dot Sight and Trijicon ACOG 4x32 Rifle Scope Fiber Optic Tritium Illuminated Crosshair. Browse all ACOG rifle scopes or Trijicon rifle scopes.
Ideal For
- Shooters who want a fixed 4x — one magnification, nothing to knock off zero
- Low-light work, where the 32mm objective is still gathering light at dusk
- Shooting into shadow or at first light, with the Red crosshair BDC reticle illuminated
Key Features
- Magnification / Objective: 4x fixed
- Objective: 32mm
- Reticle: Red crosshair BDC, dual-illuminated, calibrated .223/5.56 flattop rifles out to 600 meters
- Illumination: Dual illumination: fiber optics (day) + tritium (night), battery-free
- Field of View: 36.8 ft @ 100 yds (7 degrees)
- Eye Relief: 1.5 in (38.1mm)
- Exit Pupil: 0.32 in (8.13mm)
- Mount: Trijicon Quick Release Mount AC12033 (included; not the TA51 thumbscrew)
About This Model
- Reticle: Red crosshair BDC, dual-illuminated, calibrated .223/5.56 flattop rifles out to 600 meters
- Illumination: Dual illumination: fiber optics (day) + tritium (night), battery-free
- Warranty: Trijicon Limited Lifetime Warranty
What's Included
- ACOG 4x32 ECOS with 3.25 MOA RMR Type 2 LED red dot mounted
- Trijicon Quick Release Mount (AC12033)
- set of backup iron sights
- TA56 LensPen
- TA71E lanyard assembly
- PR15 logo sticker
- ACOG
Technical Specifications
Magnification / Objective |
4x fixed |
Objective |
32mm |
Reticle |
Red crosshair BDC, dual-illuminated, calibrated .223/5.56 flattop rifles out to 600 meters |
Reticle Color |
Red |
Caliber Calibration |
.223 / 5.56 BDC |
Illumination |
Dual illumination: fiber optics (day) + tritium (night), battery-free |
Eye Relief |
1.5 in (38.1mm) |
Exit Pupil |
0.32 in (8.13mm) |
Field of View |
36.8 ft @ 100 yds (7 degrees) |
Weight |
16.3 oz (462g) |
Housing |
Forged aluminum (7075-T6), matte black |
Finish |
Flat Dark Earth; note Trijicon warranty excludes Cerakote surface damage |
Mount |
Trijicon Quick Release Mount AC12033 (included; not the TA51 thumbscrew) |
Water Resistance |
Submersion depth -66 ft (-20m); dry-nitrogen filled, fogproof |
SKU / MPN / UPC |
TA31-D-100553 / TA31-D-100553 / 719307311817 |
Warranty
Trijicon back this with their Limited Lifetime Warranty: the optical system and metal structure are covered against defects in materials and workmanship for the lifetime of the original owner. The tritium lamp is separately warranted to glow for fifteen years from date of manufacture.
US Shipping & Support
Shipped from D&R Sports Center in the USA with fast, tracked delivery. Questions on fit, mounting or which model suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
Which reticle does it have?
Red crosshair BDC, dual-illuminated, calibrated .223/5.56 flattop rifles out to 600 meters.
Is the reticle illuminated?
Dual illumination: fiber optics (day) + tritium (night), battery-free.
What does it mount to?
Trijicon Quick Release Mount AC12033 (included; not the TA51 thumbscrew).
How much eye relief does it give?
1.5 in (38.1mm).
Is this a genuine Trijicon product?
Yes — factory-new Trijicon, supplied through US distribution. The part number is TA31-D-100553 and the barcode is 719307311817.
What warranty does it carry?
Trijicon back this with their Limited Lifetime Warranty: the optical system and metal structure are covered against defects in materials and workmanship for the lifetime of the original owner. The tritium lamp is separately warranted to glow for fifteen years from date of manufacture.
Technical Specifications
- SKU
- TA31-D-100553
- UPC
- 719307311817
- Manufacturer
- Trijicon
- Product Line
- ACOG ECOS Dual-Sight Riflescope
- Magnification
- Fixed 4×
- Objective Lens Diameter
- 32 mm
- Caliber Calibration
- .223 Remington / 5.56×45 NATO
- Primary Reticle Type
- Dual-illuminated Red Crosshair BDC (fiber optic & tritium)
- Secondary Sight
- Trijicon RMR Type 2 reflex with 3.25 MOA red dot
- Reticle Illumination
- Fiber optics and tritium (ACOG); LED (RMR)
- Bindon Aiming Concept
- Yes (both-eyes-open shooting)
- Eye Relief
- ~1.5 in (38.1 mm)
- Exit Pupil
- ~8 mm
- Field of View
- ~36.8 ft @ 100 yds
- Adjustment Type
- Windage and elevation (ACOG) & windage/elevation (RMR)
- Adjustment Click Value
- 0.5 MOA (ACOG)
- Construction
- Forged aircraft-grade aluminum, waterproof and shock-resistant
- Finish
- Flat Dark Earth (ECOS configuration)
- Weight
- ~15 oz (425 g)
- Overall Length
- ~6.2 in
- Included Accessories
- Quick release mount, backup iron sights, LENSPEN, logo sticker, lanyard, manual, warranty documentation
- Country of Origin
- USA (Trijicon product family)