Description
The EOTech EXPS3 Holographic Weapon Sight EXPS3-4 is an exceptional firearm accessory built to aid marksmen who demand precision and durability. This state-of-the-art sight is designed to enhance targeting speed in tactical situations while enabling rapid both-eyes-open sighting at various ranges. The EXPS3's holographic technology is optimized for close to medium-range engagements, offering a unique red ring/quad dot reticle that promotes intuitive and precise aiming.
This model incorporates a 7mm raised quick detach base, providing lower 1/3 co-witness with iron sights and ease of mounting. Once attached, the sight promises steadfast reliability, being submersible to 33 feet and fog-resistant, ensuring clear vision in any environment. Its compact form factor also helps to conserve valuable rail space on your firearm.
Crafted for intense field use, the sight manages power efficiently, running on a single CR123 battery. The extended battery life delivers around 600 hours of runtime on a medium setting, while the sight features 30 intensity levels tailored for diverse lighting conditions – 20 for daytime use and 10 compatible with night vision devices. Adjustments are made effortlessly, with tool-free windage and elevation dials, keeping you zeroed in under any circumstance.
Features
- RUGGED DESIGN: Built for extreme conditions, the EXPS3 is submersible to 33 feet, fog-resistant, and features quick-detach capabilities.
- RAPID TARGET ACQUISITION: A 68 MOA ring with four 1 MOA dots allows for both-eyes-open sighting and fast target acquisition.
- VERSATILE BRIGHTNESS: With 20 daylight and 10 night vision settings, this sight adapts to any lighting environment.
- EFFICIENT POWER USE: The CR123 battery ensures up to 600 hours of continuous use on medium settings, maximizing time between replacements.
- PRECISE ADJUSTMENTS: Impact point corrections are easily made with tool-free windage and elevation dials at 1/2 MOA per click.
- CO-WITNESS CAPABILITY: An integrated 7mm raised base offers lower 1/3 iron sight co-witness for seamless transition between sighting systems.
- NIGHT VISION COMPATIBLE: Seamlessly work with Gen I/II/III night vision devices with dedicated settings.
- AUTO SHUT-OFF FEATURE: Helps conserve battery with 8-hour or 4-hour selectable auto shut-off.
Specifications
| Specification | Detail |
|---|---|
| Magnification Range | 1x |
| Power Supply | (1) 123 lithium battery |
| Dimensions | 3.5"x2.4"x2.8" (LxWxH) |
| Weight | 11.2 oz |
| Reticle Details | 68 MOA Ring w/ 1 MOA Ballistic Dots |
| Battery Life | 600 continuous hours at nominal setting 12 |
| Battery Type | CR123A |
| Product Type | Holographic Sight |
| Brightness Settings | 10 NVD, 20 Regular |
| Night Vision Compatible | Yes |
| Item Condition | New |
| UPC | 672294600367 |
| MPN | EXPS3-4 |
What's In The Box?
- EOTech EXPS3-4 Holographic Weapon Sight
- Quick-Start Guide
- Warranty Card
- CR123 Battery
- Protective Case
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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)