The Trijicon TA31D100367 ACOG 4x32mm optic, presented in a Flat Dark Earth (FDE) finish, is engineered for robust performance and unwavering reliability in demanding operational environments. This fixed-magnification optical system delivers a clear, bright 4x view, establishing it as a dependable component for applications ranging from competitive shooting to professional law enforcement. Its compact form factor and durable construction integrate seamlessly into various firearm platforms, optimizing performance on precision rifle systems.
Key Features and Engineering
Fixed 4x Optical System
The TA31D100367 features a precisely engineered fixed 4x magnification, providing consistent optical clarity and target identification without the operational complexities inherent in variable power optics. This design mitigates potential points of failure and ensures immediate, unambiguous target presentation.
32mm Objective Lens
An integrated 32mm objective lens facilitates balanced light gathering capabilities and a practical field of view. This optimization ensures effective target discernment across diverse lighting conditions, from bright daylight to subdued ambient light scenarios.
Passive Tritium/Fiber Optic Illumination
The distinctive Horseshoe reticle benefits from a passively illuminated system, integrating both tritium and fiber optics. This dual illumination source eliminates the requirement for batteries, guaranteeing continuous reticle visibility and sharpness irrespective of ambient light levels, from daytime saturation to low-light conditions.
Horseshoe Reticle Design
The proprietary Horseshoe reticle pattern is specifically designed to facilitate rapid target acquisition at close to medium engagement distances. Concurrently, it incorporates calibrated holds, extending the system’s utility for precise engagement at extended ranges.
Forged Aluminum Housing
Constructed from aircraft-grade forged aluminum, the optic’s housing exhibits exceptional durability and high shock resistance. This robust construction is critical for maintaining zero integrity under significant recoil impulses and environmental impacts, ensuring consistent operational readiness.
Flat Dark Earth (FDE) Finish
A non-reflective Flat Dark Earth coating is applied to the housing, providing functional camouflage properties across a spectrum of operational environments, thereby minimizing visual signature.
Technical Specifications
- Magnification: 4x Fixed
- Objective Lens Diameter: 32mm
- Reticle Type: Horseshoe
- Reticle Illumination: Tritium/Fiber Optic (Battery-Free)
- Housing Material: Forged Aircraft-Grade Aluminum
- Finish: Flat Dark Earth (FDE)
The Trijicon TA31D100367 ACOG stands as a proven optical solution, engineered for rigorous operational demands. Its design principles prioritize durability, ease of use, and optical precision, providing a robust platform for integration into mission-critical firearm systems.









