Description
Trijicon ACOG 4x32 Dual-Illum Riflescope features a 4x magnification and a 32mm objective lens, providing excellent clarity and a wide field of view of 36.8 feet at 100 yards. The dual-illumination system utilizes fiber optics and tritium to ensure optimal reticle visibility in varying lighting conditions, making it suitable for tactical and competitive environments. Built with a rugged Cerakote Flat Dark Earth finish, this scope is designed for durability and resistance to corrosion and environmental challenges.
With a compact length of 5.8 inches and weighing just 9.9 ounces, this ACOG model balances performance and portability. A fixed parallax adjustment and 1.5-inch eye relief facilitate rapid target acquisition, essential for military, law enforcement, and civilian shooters. The green crosshair reticle is calibrated for .223 ammunition, ensuring accuracy for AR-15 platform rifles and similar firearms.
Key Features:
- DUAL ILLUMINATION SYSTEM: Fiber optic and tritium-based illumination provide a bright reticle in any lighting condition, eliminating the need for batteries.
- RUGGED CONSTRUCTION: Forged 7075-T6 aircraft-aluminum housing ensures exceptional durability and resistance to harsh environmental conditions.
- CERAKOTE FINISH: Flat Dark Earth Cerakote coating offers superior protection against wear, corrosion, and environmental factors while providing tactical camouflage.
- BALLISTIC RETICLE: Green crosshair reticle calibrated for .223 ammunition, featuring bullet drop compensation for improved long-range accuracy.
- COMPACT DESIGN: Lightweight 9.9 oz construction and 5.8" length minimize impact on weapon balance and handling.
- WATERPROOF PERFORMANCE: Nitrogen-filled scope body is waterproof to 328 feet (100 meters), ensuring reliability in extreme weather conditions.
- QUICK TARGET ACQUISITION: Fixed 4x magnification and 1.5" eye relief allow for rapid engagement of targets at various distances.
- VERSATILE MOUNTING: Integrated mounting base compatible with standard Picatinny rails for easy installation on a variety of firearm platforms.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | TA31-C-100380 |
| Magnification | 4x |
| Objective Lens Diameter | 32mm |
| Scope Length | 5.8" |
| Weight | 9.9 oz |
| Eye Relief | 1.5" |
| Field of View | 7° (36.8 ft @ 100 yards) |
| Exit Pupil | 8.1 mm |
| Reticle | Green .223 Crosshair |
| Illumination | Dual (Fiber optic & Tritium) |
| Parallax Setting | Fixed |
| Turret Adjustment | 2 clicks/inch @ 100 yards |
| Finish | Cerakote Flat Dark Earth |
| Waterproof Depth | 328 ft (100 m) |
| UPC | 719307307971 |
| MPN | 100380 |
What's in the Box?
- Trijicon ACOG 4x32 Riflescope
- Scopecoat protective cover
- Manual
- Warranty card
Customer Reviews
“The clarity and durability of this ACOG are unmatched. Perfect for tactical situations!”
“Lightweight and easy to mount. The dual-illumination works great in low light.”
“Highly accurate and reliable. I trust this scope for all my shooting needs.”
FAQ
One common question is about the ACOG's performance in low light. The dual-illumination system, which combines fiber optics and tritium, ensures that you can see the reticle clearly even in dim conditions. This feature is especially beneficial for those who need to engage targets quickly during twilight or dawn.
Another concern is regarding maintenance. Trijicon scopes are designed for durability; however, it's advisable to regularly check and clean the lenses with a soft cloth to maintain optimal clarity. Users can also ensure the scope remains waterproof by properly sealing the caps after use.
When comparing the ACOG to other scopes, some may wonder about the fixed magnification. While other models offer variable magnification, the ACOG’s 4x magnification provides a reliable and consistent field of view, which many shooters prefer for its simplicity and effectiveness in tactical scenarios.
Similar Models
Looking for additional optics? Explore our complete Trijicon lineup, including the Trijicon VCOG for versatility in magnification and the Trijicon MRO for a reflex sight option. Each model offers exceptional performance tailored to your shooting needs.
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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)