Description
The Trijicon ACOG 3.5x35 Riflescope .308 Red Horseshoe/Dot TA11H-308 100154 is a high-performance optical sight designed for precision shooting and tactical applications. This compact and rugged scope offers 3.5x magnification with a 35mm objective lens, providing an excellent balance of field of view and target acquisition capabilities. The advanced BAC (Bindon Aiming Concept) reticle features a red horseshoe/dot pattern specifically calibrated for .308 Winchester ammunition, allowing for accurate ranging and holdovers out to 1200 meters.
Engineered for durability and reliability, the Trijicon ACOG 3.5x35 is constructed from aircraft-grade aluminum and is waterproof up to 100 meters. Its innovative dual-illumination system utilizes fiber optics for daylight brightness adjustment and tritium for low-light conditions, ensuring optimal reticle visibility in any environment without the need for batteries. The fixed parallax setting and generous eye relief of 2.39 inches contribute to rapid target engagement and shooter comfort.
The TA11H-308 model comes equipped with a TA51 mount, making it compatible with standard Picatinny rail systems found on many modern rifles. With its compact 8-inch length and lightweight design at just 14 ounces (without mount), this ACOG scope minimizes bulk while maximizing functionality. The 3 clicks per inch at 100 yards adjustment allows for precise zeroing and on-the-fly corrections.
Ideal For: Military and law enforcement personnel, competitive shooters, and civilian enthusiasts seeking a reliable and versatile optic for their .308 caliber rifles. The Trijicon ACOG 3.5x35 excels in both close-quarters engagements and medium-range precision shooting scenarios.
Features:
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DUAL ILLUMINATION SYSTEM: Utilizes fiber optics for daylight illumination and tritium for low-light conditions, ensuring a visible reticle without batteries.
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RUGGED CONSTRUCTION: Forged from aircraft-grade aluminum with a hard-anodized finish, providing exceptional durability and resistance to harsh environments.
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ADVANCED BAC RETICLE: Features a red horseshoe/dot pattern calibrated for .308 Winchester, offering holdovers out to 1200 meters for improved long-range accuracy.
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COMPACT AND LIGHTWEIGHT: Measures 8 inches in length and weighs only 14 ounces without mount, minimizing impact on weapon handling.
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WATERPROOF PERFORMANCE: Sealed and nitrogen-filled to prevent fogging, with waterproof capabilities up to 100 meters depth.
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GENEROUS EYE RELIEF: Offers 2.39 inches of eye relief, promoting rapid target acquisition and reducing fatigue during extended use.
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FIXED PARALLAX: Set for parallax-free performance at 100 yards, simplifying aiming and improving accuracy across various distances.
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VERSATILE MOUNTING: Includes a TA51 mount for easy installation on Picatinny rail systems, ensuring compatibility with a wide range of firearms.
Specifications:
| Specification | Detail |
|---|---|
| Model | TA11H-308 |
| SKU/MPN | 100154 |
| UPC | 719307302570 |
| Magnification | 3.5x |
| Objective Lens Diameter | 35mm |
| Reticle | .308 Red Horseshoe Dot |
| Illumination | Dual (Fiber optics & Tritium) |
| Length | 8 inches |
| Weight | 14 oz. (without mount) |
| Eye Relief | 2.39 inches |
| Field of View | 28.9 feet @ 100 yards |
| Exit Pupil | 10.0 mm |
| Adjustment Click Value | 3 clicks/inch @ 100 yards |
| Finish | Matte Black |
| Waterproof Depth | 100 meters |
| Mount Included | TA51 Flattop Adapter |
What's Included:
- Trijicon ACOG 3.5x35 Riflescope
- TA51 Flattop Adapter Mount
- Lens Covers
- User Manual
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Optics Knowledge Center
Understanding Rifle Scope Basics
Magnification
Magnification refers to how much larger an object appears through the scope compared to the naked eye. Fixed power scopes have one magnification setting, while variable power scopes offer a range (e.g., 3-9x).
Objective Lens
The objective lens is the front lens that gathers light. Larger objective lenses (measured in mm) gather more light, providing brighter images in low-light conditions but add weight and require higher mounting.
Reticle
The reticle (crosshair) is the aiming point inside the scope. Modern scopes offer various reticle designs, from simple duplex crosshairs to complex ballistic reticles with holdover points for different distances.
Adjustments
Rifle scopes have turrets for windage (horizontal) and elevation (vertical) adjustments. These are measured in MOA (minutes of angle) or MRAD (milliradians) and allow precise aiming adjustments.
Proper Scope Mounting Guide
Select the Right Rings & Base
Choose rings that match your scope's tube diameter (typically 1", 30mm, or 34mm). Select a base compatible with your rifle's receiver. For heavy-recoiling rifles, opt for stronger mounts.
Install the Base
Clean the receiver and base thoroughly. Apply a small amount of blue Loctite to the screws. Attach the base to the receiver and torque the screws to manufacturer specifications.
Attach the Rings
Attach the bottom halves of the rings to the base. Place the scope in the rings and loosely attach the top halves. Don't fully tighten yet.
Set Eye Relief & Level
Position the scope for proper eye relief (3-4 inches) in your normal shooting position. Ensure the reticle is level using a scope leveling tool. Once positioned correctly, tighten the rings evenly in a cross-pattern.
Scope Zeroing Tips
Start Close
Begin zeroing at a shorter distance (25-50 yards) to ensure you're on paper before moving to your desired zero distance (typically 100 yards).
Use a Stable Rest
Always zero your rifle from a stable shooting position using a bench rest, sandbags, or a shooting rest to eliminate as much human error as possible.
Fire Groups
Fire 3-shot groups before making adjustments. This provides a more accurate representation of where your rifle is shooting than single shots.
Make Deliberate Adjustments
Know your scope's adjustment values (typically 1/4 MOA per click). If your group is 2 inches low at 100 yards, you'll need to adjust up 8 clicks (for a 1/4 MOA scope).
Confirm Your Zero
After making adjustments, fire another group to confirm your zero. Repeat the process until your point of impact matches your point of aim.
Document Your Settings
Once zeroed, record your settings including distance, ammunition used, and environmental conditions for future reference.
Optics Maintenance & Care
Cleaning Lenses
- Start by blowing or brushing away loose particles
- Use a lens pen or microfiber cloth for fingerprints
- For stubborn dirt, use lens cleaning solution (never household cleaners)
- Clean with gentle circular motions from center outward
Protecting Your Optics
- Always use lens caps when not in use
- Store in a dry place with silica gel packets
- Avoid extreme temperature changes
- Use a quality scope cover in harsh conditions
Regular Maintenance
- Check and tighten mount screws periodically
- Inspect O-rings and seals for damage
- Verify zero after rough handling
- Clean the exterior with a damp cloth
What to Avoid
- Never use fingers to touch lenses
- Avoid paper products (tissues, paper towels) on lenses
- Don't use acetone, alcohol, or household cleaners
- Never disassemble your scope (voids warranty)