Description
Trijicon ACOG 4x32 Riflescope with TA51 Mount offers precise 4x magnification through a 32mm objective lens, ensuring clarity and optimal light transmission across various conditions. Equipped with a dual-illuminated green chevron reticle, this riflescope maintains visibility during day or night operations without relying on batteries. The rugged design withstands harsh environments and heavy recoil, making it suitable for tactical applications, military use, and competitive shooting. With a fixed parallax setting at 100 yards, quick target acquisition becomes seamless, enhancing user experience.
Compact yet robust, the TA31-D-100311 measures just 5.8 inches in length and weighs 9.9 ounces, reducing bulk on your firearm while delivering top-tier performance. The generous eye relief of 1.5 inches allows for comfortable viewing and rapid engagement, making it ideal for both close-quarters and medium-range shooting scenarios. The included TA51 mount ensures a secure attachment to your firearm, allowing for reliable performance in the field.
Key Features:
- DUAL ILLUMINATION: Green chevron reticle illuminated by fiber optics and tritium for optimal visibility in all lighting conditions, no batteries required.
- RUGGED CONSTRUCTION: Forged 7075-T6 aircraft-aluminum-alloy housing ensures durability in extreme conditions, waterproof to 11 meters.
- ADVANCED OPTICS: Multi-coated lenses provide superior light transmission and clarity, with a wide 36.8 ft field of view at 100 yards.
- QUICK TARGET ACQUISITION: Fixed 4x magnification and Bindon Aiming Concept (BAC) allow for both-eyes-open shooting, enhancing situational awareness.
- PRECISE ADJUSTMENTS: 2 clicks per inch at 100 yards for windage and elevation, allowing for accurate zeroing and shot placement.
- VERSATILE MOUNTING: Includes TA51 mount for secure attachment to Picatinny or Weaver-style rails, ensuring stability during use.
- COMPACT DESIGN: Lightweight at 9.9 oz and only 5.8" long, minimizing bulk on your firearm without sacrificing performance.
- BATTLE-PROVEN: Trusted by military and law enforcement worldwide, designed to withstand the rigors of combat and tactical operations.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | TA31-D-100311 |
| Magnification | 4x |
| Objective Lens Diameter | 32mm |
| Reticle | Green Chevron, Dual-Illuminated |
| 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 |
| Adjustment Click Value | 2 clicks/inch @ 100 yards |
| Parallax Setting | Fixed at 100 yards |
| Illumination Source | Fiber optics and Tritium |
| Housing Material | Forged 7075-T6 aluminum alloy |
| Finish | Black |
| Waterproof Depth | 11 meters |
| Mount Included | TA51 |
| SKU/UPC | 719307307254 |
What's in the Box?
- Trijicon ACOG 4x32 Riflescope (TA31-D-100311)
- TA51 Mount
- Lens Pen
- Lensatic Compass
- Lens Covers
- Manual
Customer Reviews
"The clarity of the ACOG is unmatched. Perfect for my tactical needs." - John D.
"This scope holds zero beautifully and is built like a tank." - Rachel M.
"Lightweight and compact, yet incredibly durable. Highly recommend!" - Mike T.
FAQ
How does the dual-illumination feature work? The dual-illumination system uses fiber optics to gather ambient light during the day and tritium for night visibility, providing bright reticle visibility without batteries.
What maintenance is required for the ACOG? Regularly clean the lenses with a lens pen and ensure the scope is securely mounted. Check the housing for any signs of wear or damage after extensive use.
How does this scope compare to other Trijicon models? While the ACOG 4x32 offers fixed magnification for simplicity, other models may feature variable magnification or different reticle styles tailored for specific applications. Consider your shooting needs when choosing.
Similar Models
Looking for more from Trijicon? Explore our collection of riflescopes, including the Trijicon ACOG 3.5x35 and the Trijicon VCOG 1-6x24 for enhanced versatility and performance in various shooting environments. Discover the full lineup for optics that meet your specific 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)