Description
Holosun HS403R 2 MOA Micro Reflex Red Dot Sight delivers precise targeting for rifle and carbine applications. The 2 MOA reticle enhances accuracy, making it suitable for both beginners and experienced shooters. Equipped with a Rotary Switch, users can easily adjust brightness levels to adapt to various lighting conditions, ensuring optimal visibility during use.
Built with a durable aluminum body, the HS403R is designed to withstand tough environments. Its exceptional battery life of up to 50,000 hours provides confidence for extended use without frequent replacements. The sight includes versatile mounting options, including lower 1/3 co-witness and low profile mounts, making it compatible with a variety of firearms. The Red Super LED technology and 12 brightness settings, including night vision compatibility, cater to all shooting scenarios, confirming its practicality and performance.
Features – Key Benefits Bullets
- PRECISION ACCURACY: 2 MOA Red Dot enables quick and precise target acquisition, improving shooting performance.
- EXTENDED BATTERY LIFE: Lasts up to 50,000 hours, minimizing the need for frequent battery replacements.
- ADAPTIVE BRIGHTNESS: 12 brightness settings, including 2 for night vision, adapt to any lighting condition.
- ROBUST CONSTRUCTION: High-strength aluminum body ensures durability and reliability in harsh environments.
- USER-FRIENDLY INTERFACE: Rotary Switch allows for quick adjustments to brightness levels without hassle.
- MULTI-MOUNTING OPTIONS: Comes with lower 1/3 co-witness and low profile mounts for flexibility across firearms.
- UNRESTRICTED EYE RELIEF: Parallax-free design provides unlimited eye relief for quick target acquisition.
- NIGHT VISION COMPATIBILITY: Works seamlessly with night vision devices, enhancing low-light performance.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | HS403R |
| Footprint | Aimpoint Micro |
| Weight | 3.53 oz |
| Length | 2.57 inches |
| Mount | Lower 1/3 Cowitness and Low Profile |
| Magnification Range | 1x |
| Reticle Size | 2 MOA |
| Reticle Color | Red |
| Parallax Adjustment | Parallax-free |
| Eye Relief | Unlimited |
| Adjustment Graduation | 0.5 MOA |
| Elevation Adjustment | ±50 MOA |
| Windage Adjustment | ±50 MOA |
| Finish | Black |
| Dimensions | 2.57 x 2.70 x 1.59 inches |
| Night Vision Compatible | Yes |
| Brightness Settings | 2 NVD 10 DL |
| Battery | CR2032 |
| Battery Life | Up to 50,000 Hours |
| Item Condition | New |
| UPC | 605930625295 |
| MPN | HS403R |
| Product Type | Shop Red Dot Sights |
What's in the Box?
- Lower 1/3 Cowitness Mount
- Low Profile Mount
- T10 L Key
- Rubber Cover
- CR2032 Battery
- Lens Cloth
- User Manual
Customer Reviews
“The HS403R is incredibly easy to use. Brightness adjustments are seamless, and it holds zero perfectly.”
“Lightweight and durable, this sight has improved my shooting accuracy significantly. Highly recommended!”
“Excellent value for the price. The battery life is impressive, and the clarity is great, even in low light.”
FAQ
How does the HS403R perform in low-light conditions? The HS403R features a Red Super LED with 12 brightness settings, including options for night vision. This adaptability ensures you can effectively use the sight in various lighting environments, making it suitable for low-light hunting or tactical applications.
Is the HS403R compatible with different firearm platforms? Yes, the HS403R includes both lower 1/3 co-witness and low profile mounts, allowing for versatile mounting options across various rifles and carbines. This flexibility makes it a great choice for different shooting setups.
What maintenance is required for the HS403R? The robust aluminum construction is designed for durability, but it’s important to regularly check the battery and clean the lens to ensure optimal performance. The included lens cloth helps maintain clarity, while the long battery life reduces maintenance frequency.
How does it compare to other red dot sights? The HS403R stands out with its extended battery life, robust construction, and user-friendly interface. Compared to similar models, it offers a competitive edge, particularly with its night vision compatibility and adaptive brightness features.
Can I use the HS403R for competitive shooting? Absolutely. Its quick target acquisition capabilities, paired with the precision of the 2 MOA reticle, make it well-suited for competitive shooting and tactical training scenarios.
Similar Models
Looking for more optics options? Check out our range of Holosun products, including the HS510C for enhanced features and the HS503G for a versatile alternative. Explore our full collection to find the ideal sight that meets 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)