Description
The Trijicon ACOG 4x32 USMC Combat Optic TA31RCO-M4CP 100230 is an advanced combat optical gunsight designed specifically for the M4 and M4A1 weapon systems. This state-of-the-art optic incorporates dual illumination technology, utilizing fiber optics to self-adjust reticle brightness during daylight and tritium for low-light conditions. This innovative feature eliminates the need for batteries, ensuring reliable operation in any lighting scenario.
Engineered to meet United States Marine Corps specifications, this optic excels in quick target acquisition at close combat ranges. The enhanced target identification capabilities and integrated bullet drop compensator significantly improve hit probability at distances up to 800 meters. With its external adjustments for windage and elevation, operators can make precise changes without the need for tools, enhancing field usability.
The Trijicon ACOG TA31RCO-M4CP boasts a durable matte black finish and features a unique red chevron reticle. Its robust housing is designed to accommodate the easy addition of a Trijicon RMR (not included), further expanding its versatility. Weighing 15.8 oz with mount and offering a fixed 4x magnification, this optic provides a generous field of view of 36.8 ft at 100 yards.
Ideal For: The Trijicon ACOG 4x32 USMC Combat Optic is perfect for military personnel, law enforcement agencies, and discerning shooting enthusiasts who demand unparalleled precision, durability, and performance across a wide range of lighting conditions and environments.
Features:
-
DUAL ILLUMINATION SYSTEM: Utilizes fiber optics for daylight brightness adjustment and tritium for low-light conditions, eliminating the need for batteries and ensuring constant reticle illumination in any environment.
-
MARINE CORPS SPECIFICATIONS: Built to meet rigorous USMC standards, guaranteeing exceptional performance and reliability in the most demanding combat situations.
-
ENHANCED TARGET ACQUISITION: Offers quick and precise target acquisition at close combat ranges, with improved target identification capabilities ensuring hit probability up to 800 meters.
-
WATERPROOF CONSTRUCTION: Engineered to be waterproof up to 11 meters, this optic maintains reliable operation in various challenging conditions, from heavy rain to submersion.
-
TOOL-FREE ADJUSTMENTS: Features external windage and elevation adjustments that can be easily modified without the need for additional tools, enhancing field usability and convenience.
-
DURABLE DESIGN: Constructed with a rugged matte black finish and robust housing, ensuring longevity and resistance to harsh operational environments.
-
VERSATILE MOUNTING: Includes integrated mounting bosses that allow for easy addition of a Trijicon RMR, expanding the optic's capabilities for various shooting scenarios.
-
OPTIMAL OPTICAL PERFORMANCE: Provides a generous 1.5" eye relief and an 8.1 mm exit pupil, allowing for comfortable viewing and rapid target engagement while maintaining situational awareness.
Specifications:
| Specification | Details |
|---|---|
| Model | TA31RCO-M4CP |
| SKU/MPN | 100230 |
| Condition | New |
| Magnification | 4x |
| Objective Diameter | 32mm |
| Weight | 15.8 oz with mount and ARD |
| Length | 6.7" |
| Field of View | 7° (36.8 ft @ 100 yards) |
| Eye Relief | 1.5" |
| Exit Pupil | 8.1 mm |
| Reticle | Red Chevron |
| Illumination | Fiber optic and tritium |
| Adjustment Click Value | 2 clicks/inch @ 100 yards |
| Parallax | Fixed |
| Finish | Black |
| Waterproof | Up to 11 meters |
| UPC | 719307302075 |
Our Guarantees
FREE Fast Shipping Over $99
Enjoy complimentary expedited shipping on all orders over $99.
Secure Payments
Shop with confidence using our encrypted payment processing.
High Quality or Money Back
Not satisfied with your purchase? We'll refund your money, no questions asked.
Top-Notch Support
Our expert team is available to answer all your questions and provide assistance.
What Our Customers Say
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)