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Trijicon Acog 4x32 Scope - .223/5.56 Red RCO (Military Chevron) Reticle - Fiber & Tritium Illumination w/ Flattop Mount- TA31RCO-A4CP

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Shipping cost is $5.50 for orders under $35. We ship with UPS and USPS. 

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You will receive tracking information immediately at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses.  

We have a 90-day no-hassle return policy. We pay return shipping.

If you need to request a return, contact us at and we will send you a return label

After 90 days, defective items will still be covered under the manufacturer’s warranty, where applicable.

Please refer to the product listing for warranty details. If you have specific warranty questions, contact us at We may direct you to pursue your warranty claim directly with the manufacturer.

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The TA31RCO is an Advanced Combat Optical Gun sight (ACOG) designed for the M16A4 Weapon system (20" barrel). It incorporates dual illumination technology using a combination of fiber optics and self- luminous tritium. This allows the aiming point to always be illuminated without the use of batteries. The Tritium illuminates the aiming point in total darkness, and the fiber optic self-adjusts reticle brightness during daylight according to ambient light conditions. This allows the operator to keep both eyes open while engaging targets and maintaining maximum situational awareness. Designed to the exact specifications of the United States Marine Corps, the unique reticle pattern provides quick target acquisition at close combat ranges while providing enhanced target identification and hit probability out to 800 meters utilizing the Bullet Drop Compensator.

The TA31RCO-A4CP also includes:

- 1 Thumbscrew Flattop Adapter (TA51)
- 1 RCO 4x32 ACOG Pouch (TA86)
- 1 4x32 RCO killFLASH
- 1 Adjuster Cap Lanyards
- 1 4x32 Scopecoat (TA96)
- 1 Lenspen (LENSPEN)
- 1 Trijicon Logo Sticker (PR15)
- 1 RCO Manual
- 1 Warranty Card
- 1 ACOG Thumb Screw (RCO) (TA53A)


- Magnification: 4
- Objective Size: 32
- Bullet Drop Compensator: Yes
- Length (in): 5.80
- Weight (oz): 9.90
- Illumination source: Fiber Optics & Tritium
- Reticle Pattern: Chevron w/ Target Reference System
- Day Reticle Color: Red
- Night Reticle Color: Red
- Calibration: 0.223
- Bindon Aiming Concept: Y
- Eye Relief (in): 1.50
- Exit Pupil (mm): 8.00
- Field of View (°): 7.00
- Field of View @ 100yrds (ft): 36.80
- Adjustment @ 100 yds (clicks/in): 3
- Mount: TA51
- Mount On/Comes With: Flattop
- Housing Material: Forged Aluminum

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