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Questions & Answers
I bought the 3.5x35 Green/Illum/Horseshoe model six months ago. I’m having an issue with the scope. The reticles brightness goes out randomly. Expert Answer

Please contact sales@opticsplanet.com for assistance with a return or exchange.

by Jeremy, Gear Expert, November 17, 2021
Can this be used on a 223/556 Expert Answer

Yes, it will work just fine.

by Ben, Gear Expert, March 15, 2021
Customer Reviews
Helpful Positive Review
great for the SCAR by Dan, Verified Owner, July 15, 2023
When you need idiot-proof, tried and true optics, the ACOG stands apart. The SCAR platform beat up one of my “mid tier” optics so I decided not to screw around any further. Grab this bad boy and don’t look back
2/2 found this helpful
Helpful Positive Review
Excellent do-all optic for 5.56 by Jared Williams, Verified Owner, January 24, 2024
Purchased this to run on my HK 416, and it does the job perfectly. Rugged, tough and can always leave it on without it dying in a few days like LPVOs. Glass and reticle is crystal clear, has forward mount to run an RMR or similar for passive NVG shoo...
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1/1 found this helpful
Helpful Positive Review
Favorite carbine scope by Gunner257, Verified Owner, July 16, 2025
Carbines are field equipment, and this is my favorite field scope. It’s rugged and fairly light. The brand is battle tested, and the reticle is simple and accurate if you use the correct round. With busier reticles, I have sometimes found myself us...
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1/1 found this helpful
Helpful Positive Review
Love it. SUPER clear. Rugged. Daylight bright. Works as expected. What else should you expect from Trijicon? I have owned just about every Trijicon and something about tritium's shelf-life bugs me. LED and bomb proof... yes please!
17/21 found this helpful
Helpful Positive Review
BEST OPTIC EVER MADE!!! by Joker, February 4, 2025
There is a reason it has been around almost 40 years and it is still being used. I have put 3,000 rounds through my AR-15 and the optic has never really lost zero. A QUALITY MOUNT IS KEY!!! My ACOG uses a Larue Tactical Mount....Going on 5 years usin...
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1/1 found this helpful
Helpful Positive Review
ACOG- Led- 3.5x35- Green- Horseshoe by Mark, August 18, 2023
Wow! Fantastic Scope. Everything I could of hoped for. I lost my dominate, right eye, several years ago. This scope has been a major part of my transition to left hand shooting. Very happy with the outcome and much to do with this lens. I know, l...
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1/1 found this helpful
Read All 20 Reviews

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Product Info for Trijicon ACOG 3.5x35 LED Illuminated Rifle Scope w/ TA51 Mount

Customize your shooting experience with the array of features packed into this Trijicon ACOG 3.5x35 LED Illuminated Rifle Scope w/ TA51 Mount. Trijicon are masters of efficiency, designing these Fixed Power Rifle Scopes to run for over 12,000 continuous hours off of a single AA battery when on #4 setting. The Trijicon 3.5x35 Illuminated ACOG Scope offers 6 adjustable brightness levels so that you can best match your background. Just pick which reticle option fits your firearm best and get a made-to-fit aiming experience with Bullet Drop Compensation (BDC) for precise calculations. Tackle any task with the rugged 7075-T6 aircraft-aluminum housing that protects the glass and inner workings to ensure your sights work when you need them most. These optics are even fully compatible with night vision devices to support nighttime operations. Advanced your loadout with the Trijicon 3.5x35 Tactical ACOG Rifle Scope for full-fledged confidence in the field.image

Specifications for Trijicon ACOG 3.5x35 LED Illuminated Rifle Scope w/ TA51 Mount:

Manufacturer: Trijicon
Objective Lens Diameter: 35 mm
Magnification: 3.5 x
Exit Pupil: 0.39 in
Field of View, Angle: 5.5 degrees
Eye Relief: 2.4 in
Color: Black
Weight: 16.8 oz
Adjustment Click Value: 1/3 MOA
Length: 8 in
Adjustment Type: MOA
Illumination Type: LED
Battery Type: AA Alkaline, AA Lithium
Width: 3 in
Adjustment Range: 40 MOA
Height: 2.6 in
Brightness Settings: 6
Battery Life: 12000 hours
Shockproof: Yes
Fogproof: Yes
Battery Quantity: 1
Package Type: Polymer Hard Case
Included Accessories: Mount Comes With TA51
Magnification Type: Fixed
Attachment Type: TA51
Country of Origin: USA

Features of Trijicon ACOG 3.5x35 LED Illuminated Rifle Scope w/ TA51 Mount:

  • Forged 7075-T6 aircraft-aluminum housing
  • 6 adjustable brightness levels
  • Compatible with most other 3.5x35 ACOG accessories available

Package Contents:

  • Trijicon ACOG 3.5x35 LED Illuminated Rifle Scope w/ TA51 Mount

Trijicon ACOG 3.5x35 LED Illuminated Rifle Scope w/ TA51 Mount Orderable Models

List of Orderable Models

  • Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .308 Horseshoe/Dot Reticle w/ TA51 Mount, Black, 100500 , MPN: TA110-D-100500 , UPC: 719307321045 , Code: TJ-RS-35LED-100500
  • Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .308 Chevron Reticle w/ TA51 Mount, Black, 100498 , MPN: TA110-C-100498 , UPC: 719307321021 , Code: TJ-RS-35LED-100498
  • Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .308 Chevron Reticle w/ TA51 Mount, Black, 100497 , MPN: TA110-C-100497 , UPC: 719307321014 , Code: TJ-RS-35LED-100497
  • Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .223 Chevron Reticle w/ TA51 Mount, Black, 100491 , MPN: TA110-C-100491 , UPC: 719307320956 , Code: TJ-RS-35LED-100491
  • Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .308 Crosshair Reticle w/ TA51 Mount, Black, 100501 , MPN: TA110-D-100501 , UPC: 719307321052 , Code: TJ-RS-35LED-100501
  • Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .223 Horseshoe/Dot Reticle w/ TA51 Mount, Black, 100494 , MPN: TA110-D-100494 , UPC: 719307320987 , Code: TJ-RS-35LED-100494
  • Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .223 Crosshair Reticle w/ TA51 Mount, Black, 100495 , MPN: TA110-D-100495 , UPC: 719307320994 , Code: TJ-RS-35LED-100495
  • Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .308 Crosshair Reticle w/ TA51 Mount, Black, 100502 , MPN: TA110-D-100502 , UPC: 719307321069 , Code: TJ-RS-35LED-100502
  • Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .223 Crosshair Reticle w/ TA51 Mount, Black, 100496 , MPN: TA110-D-100496 , UPC: 719307321007 , Code: TJ-RS-35LED-100496
  • Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .223 Chevron Reticle w/ TA51 Mount, Black, 100492 , MPN: TA110-C-100492 , UPC: 719307320963 , Code: TJ-RS-35LED-100492
  • Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .223 Horseshoe/Dot Reticle w/ TA51 Mount, Black, 100493 , MPN: TA110-D-100493 , UPC: 719307320970 , Code: TJ-RS-35LED-100493
  • Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .308 Horseshoe/Dot Reticle w/ TA51 Mount, Black, 100499 , MPN: TA110-D-100499 , UPC: 719307321038 , Code: TJ-RS-35LED-100499
  • DEMO, Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .223 Horseshoe/Dot Reticle w/ TA51 Mount, Black, 100493 , MPN: 100493-DEMO , Code: TJ-RS-35LED-100493-DEMO

Trijicon ACOG 3.5x35 LED Illuminated Rifle Scope w/ TA51 Mount Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .223 Chevron Reticle w/ TA51 Mount, Black, 100492 , MPN: TA110-C-100492-EDEMO , Code: TJ-RS-35LED-100492-EDEMO-DF-F
  • DEMO, Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .308 Horseshoe/Dot Reticle w/ TA51 Mount, Black, 100500 , MPN: 100500-DEMO , Code: TJ-RS-35LED-100500-DEMO
  • DEMO, Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .308 Crosshair Reticle w/ TA51 Mount, Black, 100501 , MPN: TA110-D-100501-DEMO , Code: TJ-RS-35LED-100501-DEMO
  • DEMO, Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .223 Chevron Reticle w/ TA51 Mount, Black, 100491 , MPN: 100491-DEMO , Code: TJ-RS-35LED-100491-DEMO
  • DEMO, Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .223 Crosshair Reticle w/ TA51 Mount, Black, 100496 , MPN: 100496-DEMO , Code: TJ-RS-35LED-100496-DEMO
  • DEMO, Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .308 Horseshoe/Dot Reticle w/ TA51 Mount, Black, 100499 , MPN: 100499-DEMO , Code: TJ-RS-35LED-100499-DEMO
  • DEMO, Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .223 Horseshoe/Dot Reticle w/ TA51 Mount, Black, 100494 , MPN: 100494-DEMO , Code: TJ-RS-35LED-100494-DEMO
  • DEMO, Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .308 Crosshair Reticle w/ TA51 Mount, Black, 100502 , MPN: TA110-D-100502-DEMO , Code: TJ-RS-35LED-100502-DEMO
  • USED, Trijicon ACOG 3.5x35 Green LED Illuminated Rifle Scope .308 Crosshair Reticle w/ TA51 Mount, Black, 100502 , MPN: TA110-D-100502-EDEMO , Code: TJ-RS-35LED-100502-EDEMO-OB-A
  • DEMO, Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .308 Chevron Reticle w/ TA51 Mount, Black, 100497 , MPN: 100497-DEMO , Code: TJ-RS-35LED-100497-DEMO
  • USED, Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .223 Chevron Reticle w/ TA51 Mount, Black, 100491 , MPN: TA110-C-100491-EDEMO , Code: TJ-RS-35LED-100491-EDEMO-US-B
  • USED, Trijicon ACOG 3.5x35 Red LED Illuminated Rifle Scope .308 Crosshair Reticle w/ TA51 Mount, Black, 100501 , MPN: TA110-D-100501-EDEMO , Code: TJ-RS-35LED-100501-EDEMO-OB-A
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