Description
The Trijicon ACOG 3.5x35 .308 Amber Chevron TA11E-A 100143 is a high-performance riflescope designed for precision shooting and tactical applications. This advanced optic features a fixed 3.5x magnification and a 35mm objective lens, providing an optimal balance between field of view and target acquisition. The scope is specifically calibrated for 7.62 (.308 cal) flat-top rifles, offering accurate ranging up to 800 meters.
Equipped with Trijicon's renowned Bindon Aiming Concept (BAC), this ACOG model allows for "both eyes open" shooting, enhancing situational awareness in critical scenarios. The amber chevron reticle is illuminated by a combination of fiber optics and tritium, ensuring optimal visibility in various lighting conditions without the need for batteries.
The Trijicon ACOG 3.5x35 .308 Amber Chevron TA11E-A 100143 is built to withstand extreme conditions. Its rugged, nearly indestructible housing is waterproof, fog-proof, and shock-resistant, making it suitable for harsh environments and intense recoil. The scope includes a Flat Top Adapter for easy mounting on MIL-STD-1913 rail systems.
Ideal For: Military personnel, law enforcement officers, competitive shooters, and hunting enthusiasts seeking a reliable, combat-proven optic for medium to long-range engagements with .308 caliber rifles.
Features:
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ADVANCED OPTICS: Multi-coated lenses and quality glass maximize light transmission and provide a clear, distortion-free sight picture for enhanced target acquisition.
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ILLUMINATED RETICLE: Dual-illuminated amber chevron reticle powered by fiber optics and tritium, automatically adjusting brightness based on ambient light conditions for consistent visibility.
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BALLISTIC COMPENSATION: Ranging reticle calibrated for 7.62 (.308 cal) ammunition, featuring bullet drop compensation and target-ranging capabilities up to 800 meters.
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RUGGED CONSTRUCTION: Forged aluminum housing designed to withstand extreme conditions, shock-resistant to handle recoil from various calibers, and exceeding military drop test requirements.
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WATERPROOF PERFORMANCE: Nitrogen-filled to eliminate internal fogging, with exceptional waterproofing that surpasses military standards for all-weather reliability.
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ENHANCED AWARENESS: Bindon Aiming Concept (BAC) allows for both eyes open shooting, improving situational awareness and target acquisition speed.
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VERSATILE MOUNTING: Includes a Flat Top Adapter for easy installation on MIL-STD-1913 rail systems, ensuring compatibility with a wide range of firearms.
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COMBAT-PROVEN: Extensively used and trusted by U.S. Special Operations Forces and Marine Corps, demonstrating unparalleled reliability in real-world combat scenarios.
Specifications:
| Specification | Detail |
|---|---|
| SKU | 100143 |
| UPC | 719307303157 |
| Magnification | 3.5x |
| Objective Lens Diameter | 35mm |
| Field of View | 28.9' @ 100 yards |
| Eye Relief | 2.4" |
| Length | 8" |
| Weight | 14 oz |
| Reticle | Illuminated Amber Chevron .308/7.62 BDC |
| Illumination Type | Fiber Optics/Tritium |
| Turret Adjustment | 1/4 MOA (3 clicks/inch @ 100 yards) |
| Parallax Adjustment | Fixed |
| Exit Pupil | 10.0 mm |
| Finish | Matte Black |
| Waterproof | Yes |
| Fogproof | Yes |
| Shockproof | Yes |
What's Included:
- Trijicon ACOG 3.5x35 .308 Amber Chevron TA11E-A 100143 Riflescope
- TA51 Flat Top Adapter
- Scopecoat
- Manual
- Warranty Card
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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)