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The Scope That Changed Everything.
There's a reason the Trijicon ACOG®(Advanced Combat Optical Gunsight) is the official medium-distance engagement optic of the Marine Corps and U.S. Special Operations Forces.
The one that started it all.
The concept was simple; a durable scope with a reticle that illuminates in low-light and no-light situations—without requiring the use of batteries.
More than 30 years later, the original ACOG stands the test of time as one of our most popular items. Choose from many 4x32 options, including the Official Rifle Combat Optic (RCO) of the U.S. Marine Corps.
Designed to the exact specifications of the US Special Operations Command for use by elite US forces, the Trijicon ACOG TA01NSN is Trijicon’s most popular ACOG. The ranging reticle allows for bullet drop compensation out to 600 or 800 meters (model dependent) without any manual adjustments. The reticle will appear black during the daytime and will glow amber in the dark, thanks to Trijicon’s patented tritium illumination. Includes backup Iron Sights. No batteries needed!
Always On, Always Ready Most ACOG® models are battery free, featuring a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light.
Take Control Several ACOG models are designed with a user adjustable brightness setting powered by a single AA battery. The 3.5x35 LED and 4x32 LED models both offer six adjustable brightness settings.
Rugged, Reliable Housing Design Fixed-power design allows for minimal moving parts to create a nearly indestructible sighting system.
"Both Eyes Open" Design “Both eyes open” shooting using The Bindon Aiming Concept (BAC) allows for improved situational awareness.
Outstanding Clarity The quality of the glass and multi-coated lenses maximize light-gathering capabilities and clear field of view with zero distortion.
Exact Target Distances & Hold Most ACOG models feature a bullet drop compensating and target-ranging reticle for decisive aiming.
Combat Proven No other magnified optic has been used more in combat than the ACOG.
Proven to withstand recoil from a .22LR to a .50BMG and everything in between. Easily passes U.S. Military drop test requirements.
Waterproof Exceptional waterproof performance that exceeds military standards. Dry nitrogen-filled to eliminate fogging. This optic is tested to withstand and perform in extreme cold and heat with dry-nitrogen filled housing that mitigates fogging.
Length x Width x Height 5.8 in x 2 in x 2.3 in (147.32mm x 50.8mm x 58.42mm)
Weight 14.96 oz. (424.11g)
Objective Size 32mm
Reticle Pattern Crosshair
Day Reticle Color Amber / Red
Night Reticle Color Amber / Red
Bullet Drop Compensating (BDC) Yes
Caliber .223 / 5.56 or .308 / 7.62
Illumination Source Tritium
Power Source Tritium
Adjustment 2 Clicks per in. @100 yards
Eye Relief 1.5 in. (38.1mm)
Exit Pupil 0.32 in. (8.13mm)
Field of View (degrees) 7°
Field of View (feet) 36.8ft. @ 100 yds. (12.27m @ 100m)
Mount Flattop Thumbscrew Mount (TA51) / M16 / AR15 Carry Handle Base