Trijicon ACOG 4×32 BAC Riflescope .223/5.56 BDC Red Crosshair Reticle
Features
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Dual‑Illuminated, Battery‑Free: Fiber optics auto‑adjust reticle brightness in daylight; tritium provides a continuous glow in low/no light—no batteries required.
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4× Fixed BAC Combat Optic: Bindon Aiming Concept™ supports both‑eyes‑open speed for close work while preserving precise 4× magnification for mid‑range 5.56 engagements.
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.223/5.56 BDC Red Crosshair Reticle: Fine illuminated crosshair with descending ballistic stadia scaled for common 5.56 NATO loads when zeroed at 100 m; simple, uncluttered holds to distance.
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Rugged Forged 7075‑T6 Aluminum Housing: Combat‑proven durability—shock, recoil, and harsh‑environment resistant; fully sealed and fog‑proof.
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Wide Situational FOV: 7° (36.8 ft @ 100 yd) helps track movers and maintain awareness.
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½ MOA External Adjusters: 2 clicks/inch @100 yd for quick zeroing without removing turret caps.
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Waterproof & Nitrogen‑Purged: Built for field extremes.
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Compact & Lightweight: Short 5.8″ body keeps carbines lively; ships ready for flattop install.
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Made in USA & Backed by Trijicon Warranty.
Technical Specifications for Trijicon ACOG 4×32 BAC Riflescope .223/5.56 BDC Red Crosshair Reticle
Specification
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Details
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Manufacturer
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Trijicon
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Model / MPN
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TA31‑CH / 100233
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SKU
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TA31‑CH
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UPC
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719307303386
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Country of Origin
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USA
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Magnification
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4× fixed
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Objective Lens Diameter
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32 mm
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Optical Design
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Fixed‑power prism (integral ACOG housing)
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Reticle
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Red Crosshair .223/5.56 BDC (dual‑illum fiber optic / tritium)
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Illumination
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Fiber (day) / tritium (night); battery‑free
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Eye Relief
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1.5″ (38 mm)
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Field of View @ 100 yd
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36.8 ft (7°)
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Exit Pupil
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8.1 mm
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Adjustment Click Value
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½ MOA (≈2 clicks/inch @100 yd)
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Total Adjustment Range
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~40 MOA windage & elevation
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Parallax Focus
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Fixed at 100 m (≈109 yd)
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Overall Length
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5.8″ optic body (≈7″+ installed w/ mount & caps)
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Weight
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9.9 oz optic‑only; ~15 oz class w/ TA51 mount & accessories (varies by package)
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Housing Material / Finish
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Forged aluminum; matte black hard anodize
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Waterproof / Fog‑Proof
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Sealed; nitrogen‑purged; duty waterproof
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Shock Resistance
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Combat‑rated for service calibers
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Mount Interface
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TA51 flattop Picatinny thumbscrew adapter (included)
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Included Accessories
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TA51 flattop Picatinny thumbscrew mount
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Scopecoat / protective cover (package dependent)
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Lens cleaning tool (LensPen® style)
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Adjuster cap lanyard / hardware kit
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Trijicon logo sticker
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Owner’s manual & warranty documentation
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