• Trijicon ACOG 5.5x50 BAC Riflescope .308/7.62 BDC Red Chevron Reticle Rifle Scope Trijicon
  • Trijicon ACOG 5.5x50 BAC Riflescope .308/7.62 BDC Red Chevron Reticle Rifle Scope Trijicon
  • Trijicon ACOG 5.5x50 BAC Riflescope .308/7.62 BDC Red Chevron Reticle Rifle Scope Trijicon
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Trijicon

Trijicon ACOG 5.5x50 BAC Riflescope .308/7.62 BDC Red Chevron Reticle

Trijicon ACOG 5.5x50 BAC Riflescope .308/7.62 BDC Red Chevron Reticle

$1,489.00 USD
$1,489.00 USD
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Trijicon ACOG 5.5×50 BAC Riflescope .308/7.62 BDC Red Chevron Reticle

Features

  • 5.5× / 50 mm Long‑Range ACOG: Larger objective delivers excellent low‑light brightness and target resolution at distance.
  • Dual‑Illuminated, Battery‑Free: Fiber optics auto‑adjust in daylight; tritium lamp glows in low/no light—always on, no batteries to manage.
  • Red Chevron .308/7.62 BDC Reticle: Zero tip at 100 m; descending stadia give holds for common 7.62×51/.308 trajectories. Chevron base (~5.53 MOA ≈ 19" @300 m) doubles as a quick range estimator on silhouettes.
  • Bindon Aiming Concept™ Capable: Bright reticle supports both‑eyes‑open speed up close while retaining 5.5× precision for longer shots.
  • Forged 7075‑T6 Aluminum Housing: Combat‑proven durability—shock, recoil, and harsh‑weather resistant; matte black hard anodize.
  • Fine External Adjusters: 5 clicks/inch @100 yd (~0.2 MOA) lets you refine zero more precisely than standard 4× ACOGs.
  • Deep‑Water Sealed & Nitrogen‑Purged: Waterproof far beyond typical field exposure; fog‑resistant.
  • TA51 Flattop Picatinny Mount Included: Ready for AR‑10 / SR‑25 / M1A‑rail builds out of the box.
  • Made in USA & Backed by Trijicon Warranty.

Technical Specifications for Trijicon ACOG 5.5×50 BAC Riflescope .308/7.62 BDC Red Chevron Reticle

Specification

Details

Manufacturer

Trijicon

Model / MPN

TA55A / 100175

SKU

TA55A

UPC

719307302037

Country of Origin

USA

Magnification

5.5× fixed

Objective Lens Diameter

50 mm

Optical Design

Fixed‑power prism (integral ACOG housing)

Reticle

Red Chevron .308/7.62 BDC (dual‑illum fiber optic / tritium)

Illumination

Fiber (day) / tritium (night); battery‑free

Eye Relief

2.2″ (56 mm)

Field of View @ 100 yd

18.4 ft (3.5°)

Exit Pupil

9.1 mm

Adjustment Click Value

5 clicks/inch @100 yd (~0.2 MOA per click)*

Total Adjustment Range

~40 MOA windage & elevation

Parallax Focus

Fixed ~100 m

Overall Length

12.0″ (305 mm)

Weight

25.6 oz (optic); ~28 oz class w/ TA51 mount (approx.)

Housing Material / Finish

Forged aluminum; matte black hard anodize

Optical Coatings

Fully multi‑coated, high‑transmission glass

Waterproof / Fog‑Proof

Sealed; dry‑nitrogen filled; deep‑water rated

Shock Resistance

Duty / combat rated

Mount Interface

TA51 flattop Picatinny thumbscrew adapter (included)

Included Accessories

  • TA55A 5.5×50 ACOG optic (Red Chevron .308/7.62 BDC)
  • TA51 flattop Picatinny thumbscrew mount
  • 5.5×50 Scopecoat protective cover (fit TA65)
  • Lens cleaning tool (LensPen® style, TA56)
  • Lanyard assembly for adjuster caps (TA71E)
  • Trijicon logo sticker (PR15)
  • Owner’s manual & warranty card

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