Description
The Trijicon ACOG 5.5x50 Riflescope .308 Red Chevron TA55A 100175 is a high-performance optical system designed for precision shooting and tactical applications. This advanced combat optical gunsight (ACOG) combines rugged durability with exceptional clarity, making it a top choice for military personnel, law enforcement, and serious marksmen.
Featuring a 5.5x magnification and a generous 50mm objective lens, this riflescope offers an impressive field of view of 18.4 feet at 100 yards. The illuminated red chevron reticle is specifically calibrated for .308 Winchester ammunition, providing accurate aiming points for various distances. With its military-grade aluminum alloy housing, the ACOG is built to withstand harsh conditions and heavy recoil.
The Trijicon ACOG 5.5x50 incorporates the innovative Bindon Aiming Concept (BAC), allowing for rapid target acquisition and improved situational awareness. Its fixed parallax setting and generous eye relief of 2.2 inches ensure comfortable viewing and consistent accuracy. The scope's compact design, measuring 12 inches in length and weighing 25.6 ounces, offers a perfect balance between performance and portability.
Ideal For: Military and law enforcement personnel, competitive shooters, hunters, and firearms enthusiasts seeking a reliable, high-quality optic for medium to long-range shooting with .308 caliber rifles.
Features:
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ADVANCED OPTICAL SYSTEM: 5.5x magnification with a 50mm objective lens for exceptional light gathering and clarity, providing a crisp sight picture even in low-light conditions.
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ILLUMINATED RETICLE: Red chevron reticle specifically designed for .308 Winchester ballistics, offering precise aiming points for various distances without the need for batteries.
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RUGGED CONSTRUCTION: Military-grade aluminum alloy housing ensures durability and reliability in extreme environments, making it suitable for combat and tactical situations.
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BINDON AIMING CONCEPT: Innovative BAC design allows for rapid target acquisition and engagement, improving overall shooting performance and situational awareness.
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COMPACT AND LIGHTWEIGHT: 12-inch length and 25.6-ounce weight provide an ideal balance between performance and portability, reducing fatigue during extended use.
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FIXED PARALLAX: Preset parallax correction minimizes aiming errors and ensures consistent accuracy across various shooting distances.
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GENEROUS EYE RELIEF: 2.2 inches of eye relief offers comfortable viewing and protects against scope eye, even with heavy recoiling calibers.
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PRECISION ADJUSTMENTS: 5 clicks per inch at 100 yards allow for fine-tuning of point of impact, ensuring maximum accuracy in various shooting scenarios.
Specifications:
| Specification | Detail |
|---|---|
| Model | TA55A |
| SKU | 100175 |
| Magnification | 5.5x |
| Objective Lens Diameter | 50mm |
| Reticle | Illuminated Red .308 Chevron |
| Eye Relief | 2.2" |
| Field of View | 18.4' @ 100 yards |
| Exit Pupil | 9.1 mm |
| Length | 12" |
| Weight | 25.6 oz |
| Housing Material | Military-Grade Aluminum Alloy |
| Turret Adjustment | 5 clicks/inch @ 100 yards |
| Parallax Setting | Fixed |
| Finish | Black |
| UPC | 719307302037 |
What's Included:
- Trijicon ACOG 5.5x50 Riflescope
- Lens covers
- User 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)