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Description
A 4x32 fixed-power ACOG riflescope with a dual-illuminated red chevron BDC reticle for .223 / 5.56 flattop rifles, aimed at professional and duty users.
This ACOG offers 4x magnification with a 32mm objective and a red chevron reticle with bullet drop compensation, calibrated for 5.56 (.223 cal) flattop rifles out to 800 metres.
Illumination is dual: fibre optics light the reticle in daylight and tritium illuminates it at night. The sight comes on a Flattop Thumbscrew Mount (TA51) in a forged aluminium housing with a Flat Dark Earth finish.
Key features
- Dual illumination — Fibre optics provide daylight illumination and tritium illuminates the reticle at night, with brightness adjusting automatically to the available light.
- Chevron ranging reticle — The chevron is zeroed using its tip at 100 metres, and its base width of 5.53 MOA, which is 19 in. at 300 metres, allows range estimation for silhouette targets.
- Calibrated BDC — The ranging reticle is calibrated for 5.56 (.223 cal) flattop rifles out to 800 metres for holds at distance.
- Both eyes open — The Bindon Aiming Concept (BAC) supports shooting with both eyes open for improved situational awareness.
- Fixed-power housing — The fixed-power design keeps moving parts to a minimum, and the forged aluminium housing is built to withstand recoil from .22LR to .50BMG.
- Waterproof and fog-free — The dry nitrogen-filled housing mitigates fogging, and the sight is rated to a submersion depth of -66 ft. (-20m).
- Multi-coated optics — Multi-coated lenses maximise light gathering and give a clear field of view of 7°.
Typical applications
- Fixed-power magnified sighting for flattop rifles in .223 / 5.56.
- Rapid range estimation and holdover on silhouette targets at medium to long range.
- Round-the-clock use, from daylight to night conditions.
Technical specifications
| Length × width × height | 5.98 in x 2 in x 2.3 in (151.89mm x 50.8mm x 58.42mm) |
| Weight | 14.9 oz. (422.41g) |
| Magnification | 4x |
| Objective size | 32mm |
| Reticle pattern | Chevron |
| Day reticle colour | Red |
| Night reticle colour | Red |
| Bullet drop compensation (BDC) | Yes |
| Calibre | .223 / 5.56 |
| Bindon Aiming Concept (BAC) | Yes |
| Illumination source | Fiber Optics & Tritium |
| Eye relief | 1.5 in. (38.1mm) |
| Exit pupil | 0.32 in. (8.13mm) |
| Field of view (degrees) | 7° |
| Field of view (distance) | 36.8 ft. @ 100 yds. (12.27m @ 100m) |
| Mount | Flattop Thumbscrew Mount (TA51) |
| Housing material | Forged Aluminum |
| Finish | Flat Dark Earth (FDE) |
| Submersion depth | 66 ft. (20m) |
In the box
- 1 × ACOG® 4x32 BAC Riflescope - .223 / 5.56 - BDC — Red Chevron Reticle, Thumbscrew Mount, FDE , Tritium / Fiber Optics Illuminated, Flat Dark Earth
- Thumbscrew Flattop Adapter (TA51)
- 4x32 Scopecoat (TA64)
- LENSPEN (TA56)
- Lanyard Assembly for Adjuster Caps (TA71E)
- Trijicon Logo Sticker (PR15)
- ACOG Manual
- Warranty Card
Model information
| Brand | Trijicon |
| Model | ACOG® 4x32 BAC Riflescope - .223 / 5.56 - BDC — Red Chevron Reticle, Thumbscrew Mount, FDE , Tritium / Fiber Optics Illuminated, Flat Dark Earth |
| MPN | TA31-D-100310 |







