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ACOG® 3.5x35 BAC Riflescope


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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.

And there’s a reason why more than one million ACOGs have been produced. Every feature of its innovative design was chosen for a single purpose: to provide increased hit potential in all lighting conditions. This is possible through a brilliantly illuminated reticle pattern, a compact design, and legendary durability that continues to lead the industry.

ACOG 3.5x35 scope with Green or Red Chevron BAC Reticle- The ranging reticle is calibrated for either 5.56 (.223 cal) or 7.62 (.308 cal)  flat-top rifles to 800 meters. Includes Flat Top Adapter. The chevron reticle is designed to be zeroed using the tip at 100 meters. The width of the chevron at the base is 5.53 MOA which is at 19” at 300 meters. This allows range estimation for silhouette targets.

ACOG® 3.5x35 scope with Red or Green Crosshair Reticle—the ranging reticle is calibrated for 5.56 (.223 cal) flat-top rifles to 1000 meters or 7.62mm (.308 cal) flat-top rifles to 1200 meters. Daytime illumination is provided by fiber optics and Tritium illuminates the scopes at night.

ACOG 3.5x35 scope with Green or Red Horseshoe BAC Reticle and Target Reference System—the ranging reticle is calibrated for 5.56 (.223 cal) flat-top rifles to 1000 meters or 7.62(.308 cal) flattop rifles out to 1200 meters. Includes Flat Top Adapter. Daytime illumination is provided by fiber optics and Tritium illuminates the scopes at night.


  • 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.

  • Shock-Resistant

    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 - Chevron Reticle
    8 in x 2.1 in x 2.9 in
    (203.2mm x 53.34mm x 73.66mm)
  • Weight
  • 14 oz. (396.89g)
  • Magnification
  • Objective Size
  • Reticle Pattern
    Chevron / Horseshoe Dot / Crosshair
  • Day Reticle Color
    Red / Green
  • Night Reticle Color
    Red / Green
  • Bullet Drop Compensating (BDC)
  • Caliber
    .223 / 5.56 or .308 / 7.62
  • Bindon Aiming Concept™ (BAC)
  • Illumination Source
    Fiber Optics & Tritium
  • Power Source
    Fiber Optics & Tritium
  • Adjustment
    3 clicks per in. @ 100 yds
  • Eye Relief
    2.4 in. (60.96mm)
  • Exit Pupil
    0.39 in. (9.91mm)
  • Field of View (degrees)
  • Field of View (feet)
    28.9 ft. @ 100 yds. (9.63m @ 100m)
  • Mount
    Flattop Thumbscrew Mount (TA51)
  • Housing Material
    Forged Aluminum
  • Finish
    Matte Black


  • Thumbscrew Flattop Adapter (TA51)
  • AA Battery
  • LENSPEN (TA56)
  • Lanyard Assembly for Adjuster Caps (TA71E)
  • Lanyard Assembly for Battery Cap
  • Trijicon Logo Sticker (PR15)
  • LED ACOG Manual
  • Warranty Card

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