Trijicon purpose-built the 3x30 TA33 ACOG Riflescope for law enforcement and military professionals who require a versatile optic that combines higher magnification for longer distance use, while maintaining the ability to use the same optic for both-eyes-open CQB operations. This Advanced Combat Optical Gunsight (ACOG) sight is outfitted with a green horseshoe-dot ballistic reticle that enables fast sighting and tracking at close range, and precise shot placement at distance with its partially-illuminated BDC hashmarks.

Trijicon's battery-free dual-illumination reticle system employs a tritium phosphor lamp for low-light and night targeting, as well as a fiber optic illumination that focuses, channels, and filters available light to illuminate the reticle. Using ambient light ensures that the reticle brightness will be appropriate for the conditions without any adjustment by the user. Anti-reflection broadband fully multicoated optics maximizes light transmission to provide bright and clear views with limited distortion

The TA33 features tactical hand-adjustable windage and elevation turrets. The reticle's aiming point can be adjusted in 1/4 MOA increments, with a total of ±20 MOA, and an internal adjustment mechanism allows the ACOG to reliably hold zero. Complementing the ACOG's optical and illumination systems is a nitrogen-filled, 7075-T6 aluminum housing with a corrosion and scratch-resistant matte black anodized finish that provides the durability needed for reliable 

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