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Trijicon TA31F 4x32 ACOG with Dual Illuminated Chevron .223 Ballistic Reticle and TA51 Flattop Mount

4.5 out of 5 stars 73 customer reviews
| 25 answered questions

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  • ACOG 4x32 Scope, Dual Illuminated Amber Chevron .223 Ballistic Reticle w/ TA51 Mount
  • With TA51 Mount
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$1,277.00 & FREE Shipping. Details Only 5 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Trijicon TA31F 4x32 ACOG with Dual Illuminated Chevron .223 Ballistic Reticle and TA51 Flattop Mount
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Total price: $1,453.00
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Product Description

Product Description

ACOG 4x32 Scope with Amber Chevron BAC Flattop Reticle- includes Flat Top Adapter. The chevron reticle is designed to be zeroed using the tip at 100 meters. The width of the chevron at the base is 5.53 MOA which is 19 in. at 300 meters. This allows range estimation for silhouette targets. Features dual illumination (Fiber optics provides daylight illumination and tritium illuminates reticle at night). The ranging reticle is calibrated for 5.56(.223 cal) flattop rifles out to 800 meters. The TA31F-A also includes: 1 Flattop Mount (TA51) 1 4x32 Scopecoat (TA64) 1 Lenspen (TA56) 1 Trijicon Logo Sticker (PR15) 1 ACOG Manual 1 Warranty Card

Amazon.com

This Trijicon ACOG riflescope offers magnification of 4x with a 32-millimeter objective. The scope is equipped with a day/night dual-illumination Chevron Bindon Aiming Concept (BAC) Reticle that provides battery-free operation by illuminating with fiber optics during daylight and a tritium phosphor lamp at night. The ranging reticle is calibrated for 5.56 (0.223 cal) flattop rifles out to 800 meters. The Chevron Reticle is designed to be zeroed using the tip at 100 meters. The width of the Chevron at the base is 5.53 MOA, which is set at 19 at 300 meters, allowing for range estimation for silhouette targets. The scope comes with a Picatinny flat top rail adapter for mounting, a fitted neoprene Scopecoat that protects the scope when it is mounted on the rifle, and a large storage case.

Trijicon ACOG Riflescopes:
Trijicon ACOGs are internally-adjustable, compact telescopic sights with tritium illuminated reticle patterns for use in low light or at night. The Bindon Aiming Concept (BAC) scopes feature bright daytime reticles that use fiber optics to collect ambient light and automatically adjust the brightness to meet available light conditions. The ACOGs combine traditional, precise distance marksmanship with close-in aiming speed. Every feature of each scope's mechanical and optical design was chosen for a single purpose: to provide increased hit potential in all lighting conditions--without failure-prone batteries. Key features include:



    ACOG riflescopes feature military grade aluminum housing for a nearly indestructible sighting system.

  • Totally Battery-Free Trijicon Tritium-Phosphor Lamp: Trijicon ACOG delivers increased hit potential in all lighting conditions--without the use of batteries--thanks to a combination of world class optics and tritium illuminated reticles that glow day and night. The fiber optics automatically adjust the brightness level and contrast of the reticle to available light conditions. The tritium-phosphor lamp glows in low-light conditions for quick target acquisition. The lamp is guaranteed to illuminate for 15 years.
  • Trijicon Fiber Optics: Automatically adjust the brightness level and contrast of the Trijicon reticle to available light conditions.
  • Broad Band Anti-Reflective Coated Lenses: Multi-coated lenses provide superior clarity and light gathering capabilities with zero distortion.
  • BAC--Bindon Aiming Concept: The BAC allows the shooter to track and engage targets faster by utilizing an illuminated aiming point instead of traditional black cross-hairs. When making dynamic movements with both eyes open, vision naturally focuses on the unmagnified view while still perceiving the illuminated aiming point. As soon as the weapon begins to steady in the target area, the brain switches to the magnified view along with the aiming point.
  • BDC--Bullet Drop Compensation: BDC is designed to compensate for the effect of gravity on the trajectory of the bullet without requiring mechanical adjustments to the sight (distance depends on model). Trijicon BDC reticles are calibrated for specific bullet rounds. When zeroed properly, the sight is ready for aim at a multitude of distances without further adjustments.
  • Large Eye Volume: Allows you to quickly acquire targets, even if you're not positioned perfectly behind the scope.
  • Waterproof to 500 feet/150 meters and dry-nitrogen filled to eliminate fogging.
  • Military Grade Aluminum Housing: Forged 7075-T6 aircraft-aluminum-alloy housing provides for a nearly indestructible sighting system.



The Chevron Reticle is illuminated with fiber optics and a tritium phosphor lamp for use in any light conditions.

Specifications:

  • Magnification: 4x
  • Objective Size: 32 millimeters
  • Bullet Drop Compensator (BDC): Yes
  • Length: 5.8 inches
  • Weight: 9.9 ounces without mount
  • Illumination Source: Fiber Optics and Tritium
  • Reticle Pattern: Chevron
  • Day Reticle Color: Red, Green, or Amber (depending on model)
  • Night Reticle Color: Red, Green, or Amber (depending on model)
  • Calibration: 0.223
  • Eye Relief: 1.5
  • Exit Pupil: 8
  • Field of View: 7 degrees
  • Field of View at 100 yards: 36.8 feet
  • Adjustment at 100 yards: 2 clicks per inch
  • Housing Material: Forged Aluminum

What's in the Box?
TA31F: Trijicon ACOG 4x32 Scope, Flattop TA51 Mount, 4x32 Scopecoat (TA64), Lenspen (TA56), Trijicon Logo Sticker (PR15), ACOG BAC Manual, Warranty Card


Product Details

  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • ASIN: B0037VVO9A
  • Item model number: TA31F-A, TA31F-R, or TA31F-G
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (73 customer reviews)
  • Amazon Best Sellers Rank: #130,418 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • Product Warranty: For warranty information about this product, please click here

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Color: Red Verified Purchase
First of all this is not a dig against the ACOG as a product. I am sure it lives up to the hype. Even though I am holding the "ACOG" I ordered it is definitely not an authentic Trijicon optic. Before I go any farther could you :

Please find my review helpful by hitting (yes), this will help a lot people from accepting delivery of a knockoff and hopefully stop this scam from continuing to happen.

Here are the distinguishing features from Trijicons website:
1. Every ACOG® will be marked with the serial number on the top of the scope, both on the eyepiece and the main housing
2. All Trijicon® ACOG® scopes have a statement on the left side of the unit indicating that the sight contains tritium
3. The words “Trijicon® ACOG®” are forged into the main housing and appear as raised letters

As you can see from the pictures the optic I received has no serial numbers, the reticle does not glow at night(no tritium), and the Trijicon logo is not part of the forging. Please be sure to double check the optic before you waste time trying to zero it or not realize what you actually have for 6 months and miss the return deadline. Thank you.

Edit:
I would like to say that I was able to return this for a full refund with no problems. The only real inconvenience I suffered was having to take time to drop this off at my local UPS store. I still have confidence in ordering these types of items from Amazon. I just make sure to fully inspect the items when receiving them. I would like to say that I believe Amazon has taken steps to prevent this type of fraud from happening in the future.
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i have one of these mounted on my stag model 8. overall, the best optic i have ever used. the BAC (bindon aiming concept) takes a little getting used to. basically, it is a "both eyes open" shooting concept in which at close distances, you do not notice the magnification of the optic and the reticle is seen on the close range targets. it does take practice to train you brain and your eye to get used to this but once you have it down, it allows for quick 1x target acquisition. at close range, with-in 50 yards, the aimpoint comp m3 sight is faster but at distance over 50 yards, the acog cannot be beat. the optic is callibrated to the 5.56 cartridge and the reticle has bullet drop compensators out to 800 meters. in order to properly use this feature, you must do a proper 100 meter "zero". once the optic is zero'd in, which does not take much, its pretty close out-of-the-box, it will hold its zero when removed from your rifle and returned to the same mount point. i actually took the acog off of my rifle, placed it on my brother's bushmaster, and the thing was nearly dead center. put it back on my rifle and first shot was dead center. that impressed me.

it should be mentioned that if you are accustomed to an aimpoint or eotech, the eye relief of the acog is not as good. typically, you need to be no farther than 1.5 inches to get the full field of view in the acog, whereas the aimpoints and eotechs have unlimited eye relief. with the factory mount, it sits low on the flat-top. i would suggest to get a larue quick-detach acog mount and the 5/8 inch riser to get the optic up to a good shooting level.
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Color: Red Verified Purchase
I bought this "Trijicon" Acog 4x32 and upon further inspection from the manual included with the optic it lacks a serial number where there is supposed to be one included to verify the authenticity of the item. In addition the red chevron does not appear even in bright sunlight and it includes a crosshair that does not match anything sold by Trijicon. I ordered an inspected item that unfortunately was not inspected at a level which detected the aforementioned issues with the scope.

I've opted to return this item and will be buying an authentic Trijicon manufactured ACOG from a specialty firearms dealer.
3 Comments 72 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Color: Red Verified Purchase
Received authentic product packaging with some sort of knockoff brand optic. Serious disappointment as I took tomorrow off of work to go coyote hunting with this item. I recall reading reviews and another person mentioned something about knockoff optics arriving.
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Color: Red Verified Purchase
I have a 512 EoTech that came with my AR-15.
I like my EoTech but that is mostly good for Close Targets.
So I bought this Trijicon ACOG and the Mini-RedDot that mounts on the Top of it. The Best of both Worlds.
The Bindon Aiming Concept utilizes 2 Eyes open.
As you Scan for Targets your Eyes will automatically switch to your non-shooting eye and the Reticle is still seen as your Brain seems to Project it into that view.
As soon as I stop Panning my Eye Switches instantly to the Better of the 2 Targets.
If the Target is close the eye will stay with the non-shooting eye with the Reticle overlayed on that image.
If the Target is far then the eye will automatically switch to the 4x View.
It is really effective. Some People cannot train their eye to do this, for me it happened the 1st Try and Every Try.
No Batteries to worry about.
Love this ACOG.
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