Description
Trijicon ACOG 4×32 Riflescope, Red .223 Chevron Reticle, TA51 Mount, Sniper Gray
The Trijicon ACOG TA31-D-100308 4×32 riflescope pairs a red .223 chevron with a Sniper Gray finish. The included TA51 mount and battery-free dual illumination make this a complete flattop scope package with a different look from the standard black version.
Red Chevron Reticle
The gray Cerakote finish changes the exterior appearance while the reticle remains red. Choose this model when that neutral finish suits your setup and you want the open-chevron sight picture of the 4×32 TA31 family.
An open chevron gives the sight picture a distinct pointed center without filling it with a solid triangle. The additional ballistic markings belong to this particular reticle, so the model designation matters as much as its color when comparing ACOGs.
Battery-Free Fiber Optics and Tritium
Fiber optics collect available light to illuminate the reticle during the day, while tritium provides illumination in low light. You do not need to switch the scope on or keep a spare battery for its reticle. Brightness responds to available light rather than a manual dial.
The reticle remains etched into the optical system, so its pattern is not created solely by illumination. This gives you a visible reference even when the illuminated portion is less prominent against the background. The scope itself has no battery compartment.
Compact Fixed-Power Construction
The scope combines fixed 4x magnification with a 32 mm objective lens. Its forged 7075-T6 aluminum housing is sealed and nitrogen-filled, protecting the multi-coated optics. It has a 7-degree field of view and an exit pupil of approximately 8 mm.
Included Mount and Fit
The included TA51-style thumbscrew mount attaches to a compatible flattop rail. The ACOG uses a dedicated mounting base rather than conventional riflescope rings. It has a relatively short eye relief of 1.5 inches, so check your available rail space and normal viewing position before choosing a mount.
Details
- Model / Manufacturer Part Number: TA31-D-100308
- Magnification: Fixed 4x
- Objective Lens: 32 mm
- Reticle: Red chevron
- Reticle Calibration / Configuration: .223 / 5.56
- Scope Illumination: Fiber optics and tritium
- Scope Battery: Not required
- Scope Brightness: Ambient-light response through fiber optics; tritium in low light
- Eye Relief: 1.5 in.
- Angular Field of View: 7 degrees
- Exit Pupil: Approximately 8 mm
- Scope Adjustment: 1/2 MOA per click
- Housing: Forged 7075-T6 aluminum
- Finish: Sniper Gray
- Mount / Hardware: TA51-style thumbscrew flattop mount included
- UPC: 719307307223








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