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Trijicon ACOG 5.5×50 BAC Scope – Multiple Options


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Trijicon ACOG 5.5×50 BAC Scope

The Trijicon ACOG 5.5×50 BAC Scope is a dual illuminated scope that was built on Trijicon’s legendary durability. The scope’s unique light gathering capability creates extreme clarity for increased target recognition, even at longer distances. It’s rugged and reliable housing is designed to be shock resistant, waterproof and nearly indestructible. The Red chevron reticle is available in 0.223 / 5.56 and .308 / 7.62 caliber.

Trijicon ACOG 5.5×50 BAC Scope Features

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 3.5×35 LED and 4×32 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 Trijicon’s Bindon Aiming Concept (BAC) feature 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 & Holds

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.

Shock Resistant

Proven to withstand recoil from a .22LR to a .50BMG and everything in between. Easily passes U.S. Military drop test requirements.


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 12 in x 2.5 in x 2.7 in

(304.8mm x 63.5mm x 68.58mm)

Weight 25.6 oz.


Magnification 5.5x
Objective Size 50mm
Reticle Pattern Chevron
Day Reticle Color Red
Night Reticle Color Red
Bullet Drop Compensating (BDC) Yes
Caliber 0.223 / 5.56

.308 / 7.62

Bindon Aiming Concept™ (BAC) Yes
Illumination Source Fiber Optics & Tritium
Power Source Fiber Optics & Tritium
Adjustment 5 clicks per in. @100 yards
Eye Relief 2.2 in.


Exit Pupil 0.35 in.


Field of View (degrees) 3.5°
Field of View (feet) 18.4 ft. @ 100 yds

(6.13m @ 100m)

Mount Flattop Thumbscrew Mount (TA51)
Housing Material Forged Aluminum
Finish Matte Black





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