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Questions & Answers
I have an M1 with an arch angel stock. Would it be ok to install a Trijicon scope? I already have scope mount mounted. Expert Answer

Yes, it will just need to be mounted over the top of the receiver.

by Armando R., Gear Expert, October 13, 2019
What red dots can I mount to this? Expert Answer

You could use the Trijicon ACOG RMR mount to mount a Trijicon RMR on top of the Trijicon ACOG 3.5x35 Scope w/ Dual Illuminated Red Crosshair. That mount can be found at the link below.
https://www.opticsplanet.com/trijicon-rmr-mount-for-acog-scopes-with-bosses.html

by Hunter, Gear Expert, March 31, 2022
Customer Reviews
Helpful Positive Review
Simple Strong and Built to last by Krayon, Verified Owner, March 21, 2021
I wasn’t so sure when I purchased the crosshair reticle. I’m use to the chevron but the crosshair reticle is perfect for my scar 17. The tritium is bright and the fiber lights up the center just right. I would buy one again in a heart beat.
6/6 found this helpful
Helpful Positive Review
ACOG TA11 with Green Crosshair by mark, July 30, 2017
Purchased the 308 version to shoot larger grain 556 rounds. Glass is extremely clear and great for my needs. I went with the green crosshair. AS others have noted, in direct sun I need to tape off most of the fiberoptic. Love the scope. Mount is okay...
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4/4 found this helpful
Helpful Positive Review
Excellent Product by RC, Verified Owner, April 1, 2021
Take this with a grain of salt, I’ve I only had it to range once. This is mounted on a scar 20s. As expected it mounted easily, eye relief is more forgiving than expected, and was dialed in quickly at 100 yards. I was only able to walk it out to 300 ...
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3/4 found this helpful
Helpful Positive Review
Put on my new FN SCAR 17S 308 cal. Was almost dead zero at 100 yards after mounting right out of the box. After 8 rounds of sighting it in, put the next 20 rounds all in a 1 inch group at 100 yards. Crystal clear optic and light weight. Would recomme...
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38/38 found this helpful
Helpful Positive Review
Trijicon vs Jesus by AJ, July 7, 2015
Reading the Bible is the only ammunition against the Devil. But with this optic on my SCAR 17 (that I sold yesterday ;) ) I feel pretty good about my chances should my Bible ever be far away. The glass in clear, as are our instructions in the Bible...
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8/18 found this helpful
Helpful Positive Review
great optic! by Michael Yoder, Verified Owner, November 14, 2023
I put it on a springfield armory m1a and it performs very well! I killed a deer with it at 140 yards no problem and could easily kill one twice as far. The reticle is too bright in direct sunlight but you can cover it and make it dimmer.
1/3 found this helpful
Read All 30 Reviews

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Product Info for Trijicon ACOG 3.5x35 Scope w/ Dual Illuminated Red Crosshair .308 Ballistic Reticle & TA51 Mount

When out on the field, you will want the Trijicon ACOG 3.5x35 Scope w/ Dual Illuminated Red Crosshair .308 Ballistic Reticle & TA51 Mount with its Crosshair Reticle - the ranging reticle is calibrated for 7.62 (.308 cal) flat-top rifles to 1200 meters. This rifle scope by Trijicon that was originally designed for the military, is also offered in a lightweight compact design for the. Available in a variety of reticle and magnification configurations, the Trijicon ACOG 3.5x35 Rifle Scope is ideally suited for a wide range of firearm applications and shooting situations. Small, lightweight and compact, the Trijicon ACOG 3.5x35 Day & Night Tactical Scope still delivers the same precision and is perfect for fast-moving tactical teams operating in close quarters or for speed-oriented competition venues.image

Specifications for Trijicon ACOG 3.5x35 Scope w/ Dual Illuminated Red Crosshair .308 Ballistic Reticle & TA51 Mount:

Manufacturer: Trijicon
Objective Lens Diameter: 35 mm
Magnification: 3.5 x
Exit Pupil: 10 mm
Finish: Matte
Field of View, Linear: 28.9 ft at 100 yds
Field of View, Angle: 5.5 degrees
Eye Relief: 2.4 in
Color: Black
Weight: 14 oz
Length: 8 in
Adjustment Type: MOA
Illumination Type: Tritium, Fiber Optics
Fabric/Material: Forged Aluminum
Optical Coating: Fully Multicoated
Water Resistance Level: Waterproof
Shockproof: Yes
Fogproof: Yes
Package Type: Polymer Hard Case
Included Accessories: Mount
Magnification Type: Fixed
Condition: New
Country of Origin: USA
Attachment Type: TA51

Features of Trijicon ACOG 3.5x35 Scope w/ Dual Illuminated Red Crosshair .308 Ballistic Reticle & TA51 Mount:

  • Always On, Always Ready: Most ACOG models are battery free, featuring a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light.
  • Take Control: Several ACOG models are designed with a user adjustable brightness setting powered by a single AA battery. The 3.5x35 LED and 4x32 LED models both offer six adjustable brightness settings.
  • Rugged, Reliable Housing Design: Fixed-power design allows for minimal moving parts to create a nearly indestructible sighting system.
  • "Both Eyes Open" Design: "Both eyes open" shooting using Trijicon's Bindon Aiming Concept (BAC) feature allows for improved situational awareness.
  • Outstanding Clarity: The quality of the glass and multi-coated lenses maximize light-gathering capabilities and clear field of view with zero distortion.
  • Exact Target Distances & Holds: Most ACOG models feature a bullet drop compensating and target-ranging reticle for decisive aiming.
  • Combat Proven: No other magnified optic has been used more in combat than the ACOG.
  • Shock-Resistant: Proven to withstand recoil from a .22LR to a .50BMG and everything in between. Easily passes U.S. Military drop test requirements.
  • Waterproof: Exceptional waterproof performance that exceeds military standards. Dry nitrogen-filled to eliminate fogging. This optic is tested to withstand and perform in extreme cold and heat with dry-nitrogen filled housing that mitigates fogging.

Package Contents:

  • Trijicon ACOG 3.5x35 Scope w/ Dual Illuminated Red Crosshair .308 Ballistic Reticle & TA51 Mount
  • Thumbscrew Flattop Adapter (TA51)
  • 3.5x35 Scopecoat (TA63)
  • LENSPEN (TA56)
  • Lanyard Assembly for Adjuster Caps (TA71E)
  • Trijicon Logo Sticker (PR15)
  • ACOG BAC Manual
  • Warranty Card

Trijicon ACOG 3.5x35 Scope w/ Dual Illuminated Red Crosshair .308 Ballistic Reticle & TA51 Mount Orderable Models

List of Orderable Models

  • Trijicon ACOG 3.5x35 Dual Ill Rifle Scope w/Mount, Green Crosshair .308 Reticle , MPN: TA11J-308G , UPC: 719307302785 , Code: TJ-RS-ACOG-35x35mm-TA11J308-G
  • Trijicon ACOG 3.5x35 Dual Ill Rifle Scope w/Mount, Amber Crosshair .308 Reticle , MPN: TA11J308-A , UPC: 719307302778 , Code: TJ-RS-ACOG-35x35mm-TA11J308-A
  • Trijicon ACOG 3.5x35 Dual Ill Rifle Scope w/Mount, Red Crosshair .308 Reticle , MPN: TA11J-308 , UPC: 719307302761 , Code: TJ-RS-ACOG-35x35mm-TA11J308

Trijicon ACOG 3.5x35 Scope w/ Dual Illuminated Red Crosshair .308 Ballistic Reticle & TA51 Mount Unavailable & Discontinued Models

List of Unorderable Models

  • Open Box, Dealer Demo, Trijicon ACOG 3.5x35 Dual Ill Rifle Scope w/Mount, Red Crosshair .308 Reticle , MPN: TA11J-308-DMO , Code: TJ-RS-ACOG-35x35mm-TA11J308-DMO
  • Trijicon ACOG 3.5x35 Dual Ill Rifle Scope w/Mount, Red Crosshair .308 Reticle, Factory DEMO , MPN: TA11J308-Demo , Code: TJ-RS-ACOG-35x35mm-TA11J308-DEMO
  • DEMO, Trijicon ACOG 3.5x35 Dual Ill Rifle Scope w/Mount, Green Crosshair .308 Reticle , MPN: TA11J-308G-DEMO , Code: TJ-RS-ACOG-35x35mm-TA11J308-G-DEMO
  • Trijicon ACOG 3.5x35 Dual Ill Rifle Scope w/Mount & FREE Multiplier, Green Crosshair .308 Reticle , MPN: TA11J308-G-KIT , Code: TJ-RS-ACOG-35x35mm-TA11J308-G-KIT
  • Trijicon ACOG 3.5x35 Dual Ill Rifle Scope w/Mount & FREE Multiplier, Red Crosshair .308 Reticle , MPN: TA11J308-KIT , Code: TJ-RS-ACOG-35x35mm-TA11J308-KIT
  • Open Box, Dealer Demo, Trijicon ACOG 3.5x35 Dual Ill Rifle Scope w/Mount, Amber Crosshair .308 Reticle , MPN: TA11J-308A-DMO , Code: TJ-RS-ACOG-35x35mm-TA11J308-A-DMO
  • Trijicon ACOG 3.5x35 Dual Ill Rifle Scope w/Mount & FREE Multiplier, Amber Crosshair .308 Reticle , MPN: TA11J308-A-KIT , Code: TJ-RS-ACOG-35x35mm-TA11J308-A-KIT
  • Trijicon ACOG 3.5x35 Dual Ill Rifle Scope w/Mount, Red Crosshair .308 Reticle with Armasight Gen 2+ Day/Night Vision Clip-On System and FREE Gerber Suspension Multi-Plier , MPN: TA11J308-KIT1 , Code: TJ-RS-ACOG-35x35mm-TA11J308-KIT1
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Last updated 2026-07-02 UTC.