Trijicon ACOG 4×32 RCO ARD KillFlash
Anti‑Reflection Device for 4×32 ACOG Objectives
What It Is
The RCO ARD is the factory KillFlash® honeycomb anti‑reflection device sized for the objective end of all 4×32 ACOG models (TA31‑series, TA01‑series, TA02 LED series, Army/USMC RCO variants, and related commercial SKUs). It threads/snaps into the objective shroud to break up front‑element glare and eliminate tell‑tale “scope flash” that can compromise position—especially under bright sun, when using white lights, or when viewed through optics by an observer downrange.
Features
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Glint Suppression: Honeycomb lattice geometry disrupts reflective signatures off the objective lens, reducing the chance of giving away your position.
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Mission‑Proven Accessory: Standard component in U.S. Army and USMC Rifle Combat Optic (RCO) kits; fielded globally in combat environments.
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Minimal Light / FOV Penalty: Open‑cell design maintains usable image brightness and field of view while dramatically cutting frontal reflection.
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Tool‑Free Installation: Simply thread / push‑fit (model dependent on ACOG generation) into the objective housing until seated; no permanent mods.
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Rugged Body: Metal honeycomb element protected in a durable collar; designed to survive duty handling, transport, and field knocks.
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Matte, Low‑Signature Finish: Non‑reflective black exterior blends with service carbines.
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Easy Maintenance: Blow out dust or rinse; shake dry—cells are large enough to clear debris yet fine enough to defeat flash.
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Made in USA & Backed by Trijicon.
Technical Specifications for Trijicon ACOG 4×32 RCO ARD KillFlash
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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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TA91 / 100061 (factory reference)
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SKU
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TA91
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UPC
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719307300195
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Country of Origin
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USA
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Compatibility
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Fits all 4×32 ACOG objective housings (TA31, TA01, TA02, TA31RCO‑*, TA31F, TA31H, etc.). Not for 3.5×35, 1.5×16S, 3×30, or other ACOG sizes.
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Function
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Anti‑reflection honeycomb cell suppresses frontal lens glint.
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Attachment Method
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Press / thread‑in collar (model‑year specific tolerance) seats in objective ring; friction fit retained by housing lip.
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Overall Diameter
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Sized to 4×32 ACOG objective (~36 mm outer collar).
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Clear Aperture
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Honeycomb cell matrix sized for ~24–26 mm effective opening (varies slightly by batch).
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Added Length
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~0.4″ (10 mm) forward projection once installed.
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Weight
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~0.9 oz (26 g).
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Material
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Metal honeycomb core in polymer or alloy retaining ring (current production composite).
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Finish / Color
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Matte black, low‑glare.
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Environmental
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Temperature & solvent resistant to typical field cleaning agents; corrosion resistant finish.
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Included Items
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TA91 KillFlash® ARD unit (assembled)
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Protective poly bag / retail card (packaging style varies)
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Basic instruction note or insert (varies by packaging lot)
Installation Tips
- Ensure objective lens and ARD cells are free of loose grit before seating.
- Align ARD square to the objective; press/rotate gently until the collar seats flush.
- Do not over‑torque—hand‑snug only.
- Check that the honeycomb pattern is centered and not contacting the glass.
SEO Keywords
Trijicon TA91 ARD, ACOG 4×32 KillFlash, RCO anti‑reflection device, Trijicon objective glare reducer, ACOG honeycomb ARD.
