TRIJICON ACOG 4X32 223 GRN XHR W/RMR
- Rifle Scope
- 32 mm
- 4x
- 4x
- Better rated than 69%
A well regarded combat optic when genuine, but the ACOG has attracted counterfeits through third party warehouse listings, so buy from Amazon directly and be ready to verify authenticity.
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How it ranks among the 359 rifle scopes we track
4.7★ across 27 Amazon ratings, Bayesian-smoothed toward the category average.
27 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 359 rifle scopes we track - how the scorecard works · full rifle scopes data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jun 22, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Trijicon ACOG TA31-C-100552 is a fixed 4x32 combat optic with a green illuminated chevron reticle (GRN XHR), sold configured to pair with an RMR reflex sight for switching between magnified and close quarters aiming.
- Fixed 4x32 magnification with a green illuminated chevron reticle
- Battery free primary reticle using fiber optic and tritium
- Paired RMR reflex sight for close quarters aiming
- Model TA31-C-100552 configuration
Who it's for
Shooters running a rifle like a .308 or similar caliber who want one optic covering both reach and close quarters aiming fit the intended use. Buyers are strongly advised to purchase from Amazon directly rather than third party warehouse listings, since counterfeit units have circulated on this ASIN.
What buyers say
From Amazon customer reviews.
Genuine units drew strong praise for clarity, durability, and a battery free primary reticle that reviewers called bombproof. The main pain point is authenticity: one buyer who ordered a warehouse deal received a unit with no serial number, warped text, and a dim reticle and returned it, while others who bought new directly from Amazon confirmed their units as genuine with Trijicon by phone.
Strengths and trade-offs
Drawn from this product's published specifications.
- Chevron reticle illuminates without needing a battery
- RMR reflex sight adds a fast close range option on the same mount
- Reviewers describe zeroing the setup as straightforward
- At least one buyer received a counterfeit unit through an Amazon Warehouse listing
- The RMR portion needs a watch battery replaced every 2.5 to 5 years
Performance notes
Because the chevron reticle does not need a battery, the ACOG stays ready without maintenance on the primary optic, while the RMR handles the close range role and needs only an occasional battery swap. Reviewers who zeroed the combo described the process as straightforward, with one calling it a piece of cake.
Specifications
| Brand | Trijicon |
|---|---|
| Model | TA31-C-100552 |
| Dimensions & fit | |
| Objective Lens Diameter | 32 mm |
| Item Weight | 2 ounces |
| Construction & materials | |
| Material Type | Plastic |
| Color | Black |
| Compatibility & installation | |
| Mounting Type | Flattop Mount |
| Compatible Devices | Handgun |
| Included components | |
| Unit Count | 1 |
| Included Components | Product |
| Warranty & support | |
| Warranty Description | 2 years |
| Other details | |
| Magnification Minimum | 4x |
| Magnification Maximum | 4x |
| Sport Type | Hunting |
| Reticle Type | Crosshair |
| Night vision | Yes |
| Product Style | Green .223 Crosshair Reticle |
| Field Of View | 7 Degrees |
| Item Type Name | Holster |
Other Trijicon rifle scopes
How it compares
This product against the closest alternatives we track in rifle scopes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| TRIJICON ACOG 4X32 223 GRN XHR W/RMRThis product | 4.7 / 5 | 27 | 4.0 / 5 |
| UTG 3-12X44 30mm Compact ScopeUTG | 4.5 / 5 | 3,000 | 4.4 / 5 |
| Vortex Optics Diamondback Second Focal PlaneBrand | 4.7 / 5 | 1,500 | 4.3 / 5 |
| PINTY Tactical Rifle Scope Combo: Illuminated OpticsPinty | 4.4 / 5 | 1,100 | 4.3 / 5 |
| Firefield RapidStrike 1-6x24 SFP Riflescope KitFirefield | 4.5 / 5 | 900 | 4.3 / 5 |
Similar rifle scopes from other brands
Questions about the Trijicon TA31-C-100552
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Trijicon ACOG need a battery?
No, the main chevron reticle illuminates using fiber optic and tritium, though the paired RMR reflex sight uses a watch battery.
How do I know if my Trijicon ACOG is genuine?
One reviewer called Trijicon directly to confirm authenticity by manufacture date, and warns that warehouse or third party listings carry counterfeit risk.
How often does the RMR battery need to be replaced?
Reviewers report the RMR's watch battery lasts roughly 2.5 to 5 years.