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Trijicon ACOG 3.5x35 BAC Riflescope - .223 / 5.56 BDC
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$1289.99
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SKU: TA11H-719307302938
Overview
Built for flat-top rifles chambered in .223/5.56, this optic combines 3.5x magnification with a 35mm objective and a red Horseshoe BAC reticle for practical aiming and ranging use. The BDC reticle is calibrated to 1000 meters, making it suited to hunters and shooters who want a compact optic for extended-distance holds without adding unnecessary complexity. Daytime visibility comes from fiber optics, while tritium provides illumination in low-light conditions. It includes the TA51 thumbscrew flattop mount and is housed in forged aluminum with a matte black finish.
Why Hunters Choose the Trijicon
Calibrated 5.56
Ranging to 1000 meters
Red Horseshoe
Target Reference System for fast
Fiber Optic
Daytime illumination and tritium illumination
Includes Ta51
Thumbscrew flattop adapter for straightforward
Compact 3.5x35
17.6 oz. listed weight
Key Features
- 3.5x35 ACOG scope with Red Horseshoe BAC reticle and Target Reference System
- BDC reticle calibrated for 5.56 (.223) flat-top rifles to 1000 meters
- Daytime illumination uses fiber optics; tritium illuminates the scope at night
- Includes TA51 flattop thumbscrew adapter for mounting
- Forged aluminum housing with matte black finish
- 3.5x magnification and 35mm objective lens
Best Used For
- Hunters using flat-top .223/5.56 rifles who want a calibrated BDC reticle for longer-range holds.
- Shooters who prefer a 3.5x optic for deliberate aiming on open-country or field setups.
- Users needing daylight and low-light illumination without relying on batteries.
- Hunters or riflemen who want a compact scope with included flattop thumbscrew mounting.
- Those comfortable with a fixed-purpose optic and a 2.4-inch eye relief setup.
Specifications
| Adapter | Thumbscrew Flattop Adapter (TA51) |
|---|---|
| Adjustment | 1/2 MOA per click |
| Bindon Aiming Concept Bac | Yes |
| Blade Finish | Matte Black |
| Bullet Drop Compensating Bdc | Yes |
| Caliber | .223 / 5.56 |
| Day Reticle Color | Red |
| Exit Pupil | 0.39 in. (9.91mm) |
| Eye Relief | 2.4 in. (60.96mm) |
| Field Of View Degrees | 5.5deg |
| Field Of View Feet | 28.9 ft. @ 100 yds. (9.63m @ 100m) |
| Height | 2.9 in |
| Housing Material | Forged Aluminum |
| Illumination Source | Fiber Optics & Tritium |
| Length | 8 in |
| Magnification | 3.5x |
| Mount | Flattop Thumbscrew Mount (TA51) |
| Night Reticle Color | Red |
| Objective Size | 35mm |
| Power Source | Fiber Optics & Tritium |
| Reticle Pattern | Horseshoe Dot Day |
| Weight | 17.6 oz. (498.95g) |
| Width | 2.1 in |
Pros
- Calibrated for 5.56 (.223) flat-top rifles with ranging to 1000 meters
- Red Horseshoe BAC reticle with Target Reference System for fast aiming
- Fiber optic daytime illumination and tritium illumination for low-light use
- Includes TA51 thumbscrew flattop adapter for straightforward mounting
- Compact 3.5x35 configuration with 17.6 oz. listed weight
- Forged aluminum housing with matte black finish
Considerations & Trade-offs
- The 3.5x magnification is a deliberate middle ground: it gives more reach than a low-power optic, but it is not as close-range flexible as a true 1x sight.
- The .223/5.56 BDC and ranging reticle are calibrated for flat-top rifles, so the holdover system is purpose-built rather than broadly universal across calibers or setups.
- The 2.4 in. eye relief calls for consistent head position, which may feel less forgiving than optics with more generous eye relief.
- Illumination is fiber optic and tritium based, so brightness is tied to ambient conditions and does not use a user-adjustable electronic illumination system.
Suggested Comparisons
- AR-15 rifle scopes
- Fixed-power rifle scopes
- BDC reticle optics
- Prism scopes
Suggested Accessories
- Rifle scope mount
- Lens cleaning kit
- Flip-up scope caps
- Rifle sling
Frequently Asked Questions
What caliber is the BDC reticle calibrated for?
The ranging reticle is calibrated for 5.56 (.223 cal) flat-top rifles and is listed as .223 / 5.56 BDC.
Does this ACOG use battery-powered illumination?
No. The listed illumination source and power source are fiber optics and tritium.
What mount is included with the scope?
It includes a Thumbscrew Flattop Adapter (TA51), also listed as a Flattop Thumbscrew Mount (TA51).
What are the main listed dimensions and weight?
The listed dimensions are 8 in x 2.1 in x 2.9 in, and the weight is 17.6 oz. (498.95g).
What optical specs are provided in the product data?
The listed specs include 3.5x magnification, a 35mm objective size, 2.4 in. eye relief, and a field of view of 28.9 ft. at 100 yds. The reticle is described as a Red Horseshoe BAC Reticle with a Target Reference System.