Trijicon ACOG Rifle Scopes

Trijicon ACOG (Advanced Combat Optical Gunsight) Rifle Scopes are battle-proven, fixed-power optics designed for military, law enforcement, and tactical shooters who require unmatched durability, clarity, and accuracy. Known for their rugged construction and battery-free illumination, ACOG scopes provide superior target acquisition and combat effectiveness in all environments.

Key Features:

  • Fixed Magnification Options (1.5x – 6x) – Provides crystal-clear optics for rapid target engagement at close to medium ranges.
  • Dual-Illuminated ReticlesFiber optics adjust brightness automatically in daylight, while tritium provides illumination in low-light conditions, eliminating the need for batteries.
  • Rugged, Military-Grade Construction – Made from forged aluminum, ACOG scopes are shockproof, waterproof, and built to withstand extreme recoil and harsh conditions.
  • BDC & Ranging ReticlesCalibrated for specific calibers, such as 5.56mm, .308, and 7.62x39, ensuring quick holdovers and precise aiming.
  • Both-Eyes-Open Shooting (Bindon Aiming Concept) – Enhances situational awareness and speed, making ACOGs ideal for fast-moving combat and tactical engagements.
  • Optional RMR Red Dot Compatibility – Select models include an integrated Trijicon RMR reflex sight for dual aiming capability.

Popular Trijicon ACOG Models:

  • ACOG 4x32 – The standard military-issue model, offering legendary durability and precision.
  • ACOG 3.5x35 & 5.5x50 – Designed for longer-range engagements with greater eye relief.
  • ACOG 1.5x16 & 2x20 Compact ACOGs – Lightweight, compact options for CQB and mobile operations.
  • ACOG LED Series – Features battery-powered LED reticle illumination with adjustable brightness settings.

Trusted by U.S. Special Forces, military units worldwide, and tactical professionals, Trijicon ACOG Rifle Scopesare the gold standard in fixed-power combat optics, offering unmatched reliability, clarity, and precision for mission-critical applications.

77 products

  • Trijicon ACOG 5.5x50 BAC Rifle Scope .223/5.56 BDC Red Chevron Reticle - TA55 ACOG Rifle Scope Trijicon Trijicon ACOG 5.5x50 BAC Rifle Scope .223/5.56 BDC Red Chevron Reticle - TA55 ACOG Rifle Scope Trijicon

    Trijicon Trijicon ACOG 5.5x50 BAC Rifle Scope .223/5.56 BDC Red Chevron Reticle - TA55

    5 in stock - 7-10 working day delivery.

    Trijicon ACOG 5.5x50 BAC Rifle Scope .223/5.56 BDC Red Chevron 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 “19 at 300 meters. This allows range estimation for silhouette targets. INCLUDES: Thumbscrew Flattop Adapter (TA51) 5.5x50 Scopecoat (TA65) LENSPEN (TA56) Lanyard Assembly for Adjuster Caps (TA71E) Trijicon Logo Sticker (PR15) ACOG Manual Warranty Card SPECIFICATIONS: Trijicon ACOG 5.5x50 BAC Rifle Scope Finish: Matte Black Waterproof: Yes Weight: 25.6 Ounce Power Variability: Fixed Minimum Power: 5.5x Maximum Power: 5.5x Adjustment Click Value: 1/5 MOA Adjustment Type: Click Exposed Turrets: No Finger Adjustable Turrets: No Turrets Resettable to Zero: No Zero Stop: No Turret Height: Medium Fast Focus Eye Piece: No Lens Coating: Fully Multi-Coated Warranty: 15 Year Factory Warranty Rings Included: Yes Sun Shade Included: No Lens Covers Included: No Reticle Construction: Glass Etched Illuminated Reticle: Yes Holdover Reticle: Yes Reticle Focal Plane Location: SFP Parallax Adjustment: No Fog Proof: Yes Shock Proof: Yes Overall Length: 12 Inches Objective Lens Diameter: 50 Millimeter Eye Relief: 2.2 Inches Exit Pupil Diameter: 9.1 Millimeter Field of View @ 100 Yards Minimum Power: 18.4 Feet Field of View @ 100 Yards Maximum Power: 18.4 Feet Country of Origin: United States of America SKU: TA55 UPC: 719307302020

    5 in stock - 7-10 working day delivery.

    £1,899.00

  • Trijicon ACOG 4x32 BAC ECOS Rifle Scope 5.56 BDC Green Crosshair Reticle - TA31-D-100554 ACOG Rifle Scope Trijicon Trijicon ACOG 4x32 BAC ECOS Rifle Scope 5.56 BDC Green Crosshair Reticle - TA31-D-100554 ACOG Rifle Scope Trijicon

    Trijicon Trijicon ACOG 4x32 BAC ECOS Rifle Scope 5.56 BDC Green Crosshair Reticle - TA31-D-100554

    5 in stock - 7-10 working day delivery.

    The Trijicon ACOG 4x32 BAC ECOS Rifle Scope is the ultimate sight for both Close Quarter Battle (CQB) situations and longer distance shooting where accuracy and pinpoint bullet placement are required. This dual-sighting system gives the shooter a distinct tactical advantage with the option of either the Trijicon ACOG or RMR Type 2 sight. With the quick target acquisition of the RMR Type 2 Sight or the precise aiming capabilities provided by the magnified 4 power Trijicon ACOG— the shooter has the ability to select the proper aiming solution for the situation at hand— truly the best of both worlds. Developed to improve precision and accuracy with any style or caliber of weapon, the Trijicon RMR (Ruggedized Miniature Reflex) Type 2 is designed to be as durable as the legendary ACOG. The RMR Type 2 is an LED sight powered by a standard CR2032 battery. Housed in rugged forged aluminum, the RMR Type 2 is extremely tough yet lightweight. Easy-to-use adjusters with audible clicks allow for quick windage and elevation adjustments. The Trijicon RMR Type 2 is tougher than any alternative and suitable for military, law enforcement and hunting applications.  RMR Specifications: Length - 1.7" Weight - 1.2 oz. Magnification - 1x Adjustment Click Value - 1 MOA Battery Type - CR2032 Battery Included - Yes Reticle - 3.25 MOA dot Reticle Color - Red Housing Material - Aluminum SPECIFICATIONS: Trijicon ACOG 4x32 BAC ECOS Rifle Scope Finish: Cerakote Flat Dark Earth Waterproof: Yes Weight: 15 Ounce Battery: CR2032 Power Variability: Fixed Minimum Power: 4x Maximum Power: 4x Adjustment Click Value: 1/2 MOA Adjustment Type: Click Exposed Turrets: No Finger Adjustable Turrets: Yes Turrets Resettable to Zero: No Zero Stop: No Turret Height: Low Fast Focus Eye Piece: No Lens Coating: Fully Multi-Coated Warranty: Trijicon Limited Lifetime Reticle Construction: Glass Etched Illuminated Reticle: Yes Holdover Reticle: Yes Reticle Focal Plane Location: Second Focal Plane Parallax Adjustment: No Fog Proof: Yes Shock Proof: Yes Overall Length: 6.2 Inches Objective Lens Diameter: 32 Millimeter Eye Relief: 1.5 Inches Exit Pupil Diameter: 8 Millimeter Field of View @ 100 Yards Minimum Power: 36.8 Feet Field of View @ 100 Yards Maximum Power: 36.8 Feet Country of Origin: United States of America SKU: TA31-D-100554 UPC: 719307311824

    5 in stock - 7-10 working day delivery.

    £2,099.99

  • Trijicon ACOG 4x32 LED Rifle Scope .223/5.56 BDC Red Crosshair Reticle - TA02 ACOG Rifle Scope Trijicon Trijicon ACOG 4x32 LED Rifle Scope .223/5.56 BDC Red Crosshair Reticle - TA02 ACOG Rifle Scope Trijicon

    Trijicon Trijicon ACOG 4x32 LED Rifle Scope .223/5.56 BDC Red Crosshair Reticle - TA02

    2 reviews

    5 in stock - 7-10 working day delivery.

    From the legendary ACOG family of products, the LED ACOG is the first to offer user-selectable brightness controls. Users can select from six adjustable brightness levels with an "off" between each setting, allowing the operator to determine how much to illuminate the reticle - even in transitional lighting. Powered by a single AA battery, the LED ACOG can run for over 12,000 continuous hours (on setting #4). The body has been optimised by moving the RMR mount forward to maximise its performance in conjunction with the ACOG. Like all ACOG models, it is forged from rugged 7075-T6 aircraft-aluminium, resulting in a nearly indestructible sighting system and electronics that offer outstanding reliability. Users can select multiple bullet drop compensating and ranging reticle options. Fully night vision device compatible, the Trijicon 4x32 LED ACOG is also compatible with most other 4x32 ACOG accessories available. Package Includes: 1x Thumbscrew Flattop Adapter - TA51 1x AA Battery 1x LENSPEN - TA56 1x Lanyard Assembly for Adjuster Caps - TA71E 1x Lanyard Assembly for Battery Cap 1x Trijicon Logo Sticker - PR15 1x Manual 1x Warranty Card Specifications: Trijicon ACOG 4x32 LED Rifle Scope Magnification: 4x Objective Size (mm): 32mm Bullet Drop Compensator: Yes Length (in): 6.0 inches Weight (oz): 18.1 oz. with TA51 Mount and Alkaline Battery Illumination Source: LED Reticle Pattern: Select Reticle Calibration: .223/5.56 Bindon Aiming Concept: Yes Eye Relief (in): 1.5 inches Exit Pupil (mm): 8mm Field of View (Degrees): 7 degree Field of View @ 100 yards (ft): 36.8 ft. Adjustment @ 100 yards (clicks/in): 2 clicks per in. Mount Comes With: TA51 Housing Material: Forged Aluminium Batteries: Single AA Lithium or Alkaline Battery Battery Life: Over 12,000 hours on setting #4 using supplied alkaline battery at 21ºC (70ºF) SKU: TA02 UPC: 719307304833

    5 in stock - 7-10 working day delivery.

    £1,439.99

  • Trijicon ACOG 4x32 BAC Rifle Scope .223/5.56 BDC Green Horseshoe/Dot Reticle - TA31H-G ACOG Rifle Scope Trijicon Trijicon ACOG 4x32 BAC Rifle Scope .223/5.56 BDC Green Horseshoe/Dot Reticle - TA31H-G ACOG Rifle Scope Trijicon

    Trijicon Trijicon ACOG 4x32 BAC Rifle Scope .223/5.56 BDC Green Horseshoe/Dot Reticle - TA31H-G

    1 review

    5 in stock - 7-10 working day delivery.

    Trijicon ACOG 4x32 BAC Rifle Scope - The Advanced Combat Optical Gunsights (ACOGs) are internally adjustable, compact telescopic sights with tritium and fiber optic dual-illuminated reticle patterns for use in low light or at night. Bindon Aiming Concept (BAC) models feature bright daytime reticles using fiber optics, which collect ambient light. The ACOGs combine traditional, precise distance marksmanship with close-in aiming speed. Designed for use with the AR-15 family, every feature of the mechanical and optical design was chosen for a single purpose: to provide increased hit potential in all lighting conditions, without failure-prone batteries. Covered under a limited lifetime warranty.  INCLUDES Thumbscrew Flattop Adapter (TA51) 4x32 Scopecoat (TA64) LENSPEN (TA56) Lanyard Assembly for Adjuster Caps (TA71E) Trijicon Logo Sticker (PR15) ACOG Manual Warranty Card SPECIFICATIONS: Finish: Matte Black Waterproof: Yes Weight: 9.9 Ounce Power Variability: Fixed Minimum Power: 4 Maximum Power: 4 Adjustment Click Value: 1/2 MOA Adjustment Type: Click Exposed Turrets: No Finger Adjustable Turrets: Yes Turrets Resettable to Zero: No Zero Stop: No Turret Height: Medium Fast Focus Eye Piece: No Lens Coating: Fully Multi-Coated Warranty: Trijicon Limited Lifetime Sun Shade Included: No Lens Covers Included: No Reticle Construction: Glass Etched Illuminated Reticle: Yes Holdover Reticle: Yes Reticle Focal Plane Location: Second Focal Plane - SFP Parallax Adjustment: No Fog Proof: Yes Shock Proof: Yes Overall Length: 5.8 Inches Objective Lens Diameter: 32 Millimeter Eye Relief: 1.5 Inches Exit Pupil Diameter: 8 Millimeter Field of View @ 100 Yards Minimum Power: 36.8 Feet Field of View @ 100 Yards Maximum Power: 36.8 Feet Country of Origin: United States of America SKU: TA31H-G UPC: 719307303027

    5 in stock - 7-10 working day delivery.

    £1,499.99

  • Trijicon ACOG 4x32 USMC RCO Rifle Scope .223 Red Chevron Reticle - TA31RCO-M4CP ACOG Rifle Scope Trijicon Trijicon ACOG 4x32 USMC RCO Rifle Scope .223 Red Chevron Reticle - TA31RCO-M4CP ACOG Rifle Scope Trijicon

    Trijicon Trijicon ACOG 4x32 USMC RCO Rifle Scope .223 Red Chevron Reticle - TA31RCO-M4CP

    1 review

    5 in stock - 7-10 working day delivery.

    Trijicon ACOG 4x32 USMC RCO Rifle Scope - The TA31RCO is an Advanced Combat Optical Gunsight (ACOG) designed for the M4 and M4A1 weapon system (14.5" barrel). It incorporates dual illumination technology using a combination of fiber optics and self-luminous tritium. This allows the aiming point to always be illuminated without the use of batteries. The tritium illuminates the aiming point in total darkness, and the fiber optic self-adjusts reticle brightness during daylight according to ambient light conditions. This allows the operator to keep both eyes open while engaging targets and maintaining maximum situational awareness. Designed to the exact specifications of the United States Marine Corps, the unique reticle pattern provides quick target acquisition at close combat ranges while providing enhanced target identification and hit probability out to 800 meters utilizing the Bullet Drop Compensator. No tools are needed for windage and elevation adjustments because the TA31RCO features external adjusters, making it waterproof up to 11m without the caps. Mounting bosses are integrated into the housing by the eyepiece to allow the easy addition of a Trijicon RMR (not included). RETICLE: .223 (14.5 in. barrel) Red Chevron INCLUDES: Thumbscrew Flattop Adapter (TA51) killFlash Anti-Reflection Device (TA91) Scopecoat (TA96) LENSPEN (TA56) Lanyard Assembly for Adjuster Caps (TA71E) Trijicon Logo Sticker (PR15) RCO Manual Warranty Card SPECIFICATIONS: Trijicon ACOG 4x32 USMC RCO Rifle Scope Finish: Matte Black Waterproof: Yes Weight: 15.8 Ounce Power Variability: Fixed Minimum Power: 4x Maximum Power: 4x Adjustment Type: Click Exposed Turrets: No Finger Adjustable Turrets: No Turrets Resettable to Zero: No Zero Stop: No Turret Height: Medium Fast Focus Eye Piece: No Lens Coating: Fully Coated Warranty: Limited Lifetime Sun Shade Included: Yes Lens Covers Included: No Reticle: Chevron Reticle Construction: Glass Etched Illuminated Reticle: Yes Holdover Reticle: Yes Reticle Focal Plane Location: Second Focal Plane - SFP Parallax Adjustment: No Fog Proof: Yes Shock Proof: Yes Overall Length: 5.8 Inches Objective Lens Diameter: 32 Millimeter Eye Relief: 1.5” Inches Exit Pupil Diameter: 8 Millimeter Field of View @ 100 Yards Minimum Power: 36.75 Feet Field of View @ 100 Yards Maximum Power: 36.75 Feet Country of Origin: United States of America SKU: TA31RCO-M4CP UPC: 719307302075

    5 in stock - 7-10 working day delivery.

    £1,549.99

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