Description
Trijicon ACOG 6x48 Machine Gun Optic Riflescope Matte Black TA648MGO-M240 100016 is a high-performance optical sight designed for machine guns and other heavy-duty firearms. This rugged and reliable optic features a 6x magnification and a large 48mm objective lens, providing excellent clarity and light transmission in various lighting conditions. The dual-illuminated green horseshoe dot reticle is specifically calibrated for 7.62mm ballistics, offering precise aiming for long-range engagements.
The ACOG 6x48 is built to withstand the harshest environments and the recoil of heavy machine guns. Its durable aluminum housing is finished in matte black for low visibility and corrosion resistance. With a fixed parallax setting and a generous eye relief of 2.7 inches, this optic allows for quick target acquisition and comfortable shooting, even with heavy recoil.
Ideal For: Military and law enforcement personnel, tactical shooters, and operators of belt-fed machine guns or other high-powered firearms requiring a robust and reliable optic for long-range precision.
Features:
- ADVANCED OPTICS: 6x magnification with a 48mm objective lens for superior light gathering and clarity in various conditions[1][2].
- DUAL ILLUMINATION: Green horseshoe dot reticle with both fiber optics and tritium for day and night visibility without batteries[2].
- RUGGED CONSTRUCTION: Forged 7075-T6 aircraft-grade aluminum housing for extreme durability and reliability in harsh environments.
- BALLISTIC RETICLE: Specially designed for 7.62mm machine guns, providing accurate holdovers for long-range shooting[3].
- GENEROUS EYE RELIEF: 2.7 inches of eye relief for comfortable viewing and quick target acquisition, even with heavy recoil.
- WATERPROOF PERFORMANCE: Nitrogen-filled and sealed to prevent fogging and ensure waterproof operation to 500 feet.
- VERSATILE MOUNTING: Includes TA75 mount for secure attachment to various weapon platforms.
- COMBAT-PROVEN: Trusted by military and law enforcement professionals worldwide for its reliability and performance in critical situations.
Specifications:
| Specification | Detail |
|---|---|
| Model | TA648MGO-M240 |
| SKU | 100016 |
| Magnification | 6x |
| Objective Lens Diameter | 48mm |
| Weight | 44.3 oz |
| Length | 10.5" |
| Eye Relief | 2.7" |
| Field of View | 3.3 degrees (5.7m @ 100m) |
| Exit Pupil | 9.1 mm |
| Reticle | Green Horseshoe Dot M240 |
| Illumination | Dual (Fiber Optic & Tritium) |
| Turret Adjustment | 4 clicks per inch |
| Turret Rotation | Counter Clockwise (CCW) |
| Parallax Setting | Fixed |
| Finish | Matte Black |
| Housing Material | 7075-T6 Aluminum |
| Waterproof Depth | 500 feet |
| Mount Included | TA75 |
| UPC | 719307304505 |
What's Included:
- Trijicon ACOG 6x48 Machine Gun Optic
- TA75 Mount
- Lens Covers
- User Manual
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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)