Trijicon TA31F ACOG 4x32 BAC Red Chevron .223 / 5.56 Rifle Scope - 100215

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Trijicon TA31F 100215 ACOG 4x32 BAC Riflescope Dual Illuminated Red Chevron TA31F 100215 UPC 719307300095

Product Description

The Trijicon TA31F ACOG® 4x32mm BAC Riflescope (SKU: TA31F-100215 / UPC: 719307300095) is the combat-proven benchmark of battle optics, engineered for fast target acquisition and bullet drop compensation on .223 Remington and 5.56x45mm NATO rifle platforms. Featuring Trijicon’s dual-illumination system, the red chevron reticle is powered by ambient fiber optics during daylight operations and tritium in low-light or zero-light environments—eliminating the need for electronic batteries.

Utilizing Trijicon's Bindon Aiming Concept™ (BAC), the TA31F allows operators to shoot with "both eyes open," delivering intuitive 1x close-quarters sight tracking that seamlessly transitions into a 4x magnified view for precise long-range engagement. The red chevron reticle features a 100-meter tip zero with bullet drop compensating (BDC) stadia lines calibrated out to 800 meters. The 5.53 MOA width of the chevron base corresponds to 19 inches at 300 meters, serving as a silhouette range-estimation tool.

Forged from 7075-T6 aircraft-grade aluminum alloy, the optical housing is dry-nitrogen filled to prevent internal fogging and waterproofed to depths exceeding military requirements. Fitted with multi-coated anti-reflective lenses and shipped complete with a TA51 thumbscrew flattop adapter, the TA31F delivers unmatched clarity and combat durability.

*Armorer Bench Notes & Real-World Staging Guidance:*

Fitment Matrix: Mounts to any standard MIL-STD-1913 Picatinny receiver or quad rail using the included TA51 thumbscrew flattop mount. BDC reticle is calibrated for standard 5.56 NATO / .223 Remington flat-top carbines and rifles.

1. Ensure the host rifle is completely clear, magazine removed, and chamber visually and physically verified empty.
2. Place the TA31F ACOG and TA51 mount assembly onto the receiver Picatinny rail section to achieve a comfortable 1.5-inch eye relief.
3. Hand-tighten the dual mounting thumbscrews firmly into the rail grooves, then apply an additional 1/4 turn using a coin or screwdriver.
4. Zero the tip of the red chevron reticle at 100 meters using 1/2 MOA per click internal adjustment dials under the tethered adjuster caps.

Key Features

• Battery-Free Dual Illumination: Fiber-optic tube automatically adjusts daytime reticle brightness; tritium illuminates the reticle in complete darkness.
• Bindon Aiming Concept™ (BAC): Enables both-eyes-open shooting for rapid target engagement and superior situational awareness.
• Bullet Drop Compensating (BDC) Chevron Reticle: Red chevron reticle features 100m zero tip and ranging holdovers calibrated out to 800 meters for 5.56 NATO.
• Forged 7075-T6 Aircraft Aluminum Housing: Exceptionally durable housing design built to withstand extreme recoil, drops, and harsh combat abuse.
• Broadband Anti-Reflective Lenses: Multi-coated glass maximizes light transmission and image clarity with zero optical distortion.
• Includes TA51 Flattop Adapter: Ready to mount directly to standard Picatinny receiver rails out of the box.

Product Specifications

• Brand: Trijicon
• Model/Series: ACOG® 4x32 BAC Riflescope
• MPN / SKU: TA31F-100215 / 100215
• UPC: 719307300095
• Magnification: 4x
• Objective Lens Diameter: 32mm
• Reticle Pattern: Red Chevron w/ BDC & Silhouette Ranging
• Illumination Source: Fiber Optics & Tritium (Dual-Illuminated)
• Caliber Calibration: .223 Rem / 5.56x45mm NATO
• Eye Relief / Field of View: 1.50 Inches / 36.8 ft @ 100 Yards
• Mount Type: TA51 Thumbscrew MIL-STD-1913 Picatinny Mount
• Finish/Color: Black Hard-Coat Anodized
• Country of Origin: United States