The HS403C, by Holosun, is a 20mm micro-optical sight is for rifle and carbine applications. For instance, features include Solar Failsafe, 12 brightness settings, Holosun’s Green Super LED with up to 50k hour battery life, and 2 MOA Dot.

The HS403C  has two power systems, one is operated by solar power only, while the other operates on battery only. For instance, out of the box, this red dot is automatically solar-powered. Therefore, the red dot intensity also auto-adjusts to ambient light. If there is not enough light, such as at night, just press the “+” or “-” button to activate battery power.

Now it will operate like a regular red dot such as the HS403A. You can adjust the intensity by pressing the “+” or “-” buttons. For instance, when it is time to power down the unit, just press both buttons at the same time or simply put it away and it will turn off after 8 hours. Therefore, the unit is now automatically in solar-powered mode, ready when you need it. Moreover, you can verify the power mode by covering the solar cell. Finally, if the red dot is on, you are in battery mode. Above all, if it is off, you are in solar mode.

Tech & Features:

    • 2 MOA Dot Reticle
    • Up to 50,000 Hours Battery Life (Setting 6)
    • 12 Brightness Setting: 10 DL & 2 NV Compatible
    • Convenient Tray Battery Compartment
    • Unaffected by extreme weather conditions
    • Parallax-free & Unlimited Eye Relief
    • Durable and reliable construction
    • No hazardous materials used
    • No laser emission

Special Price Now $242.99 + FREE SHIPPING

(Therefore, Due to the COVID 19 world crisis, shipping may take longer than during normal situations. If you need expedited shipping, please let us know before you click on “Buy Now”)

Canceled Orders – Therefore, any order canceled for any reason will be charged a 2.9% cancelation fee. Be sure of your Red Dot model before you buy it or consult with one of our technicians.

Red Dot HS403C

Kit Content

    • Lower 1/3 Co-witness Mount
    •  Low Profile Mount
    •  T10 L Key
    •  Rubber Cover
    •  Download User Manual
    •  CR2032 Battery
    •  Lens Cloth



    • Reticle2 MOA Dot
    • Light Wavelength650nm
    • Reticle ColorRed
    • Parallax Free – Yes
    • Unlimited Eye Relief – Yes
    • Magnification1x
    • Multi-Coatings -Yes


    • Power SourceSolar & Battery
    • Battery TypeCR2032
    • Battery Life (Hours)50000
    • Brightness Setting10 DL&2 NV


    • Housing Material6061 T6 Aluminum
    • Surface FinishMAO
    • Adjustment per Click0.5 MOA
    • W&E Travel Range±50 MOA


    • Window Size20mm Diameter
    • Dimension (in)2.45×1.43×1.6
    • Weight (oz)2.82


    • Storage Temperature-40℃~70℃
    • Working Temperature-30℃~60℃
    • SubmersionIP67
    • Vibration1000G

HOLOSUN® Limited Lifetime Warranty

For instance, your Holosun product is warranted to be free of defects in materials and workmanship with the Holosun Limited Lifetime Warranty. Therefore, this warranty applies to the first owner upon registration of the product.  In addition, this warranty specifically applies to the metal structure of the product housing and does not apply to the optical and illumination systems.

For instance, optical glass has a 5-year warranty. Firstly, the illumination system including electronics and LED has a 3-year warranty. Secondly, batteries don’t have coverage under warranty. Thirdly, in the event of a confirmed defect under this warranty, Holosun will, at their option, repair or replace the product with a Holosun product of similar type/function, and of equal or greater value. Finally, Holosun reserves the right to make substitutions for similar product/s if the warrantied model in question is no longer in production.

This Limited Lifetime Warranty does not apply

    • Asserted defects caused by normal wear and tear of any part. For instance, that’s including knobs, finish, accidents, neglect, misuse, abuse, etc. addition.
    • Asserted defects caused by modification including; aftermarket finishes, unauthorized service, improper maintenance, acts of nature.
    • Asserted defects involving subjective personal likes or judgments.

Therefore, this warranty is null and void if modification or maintenance is provided by someone other than Holosun. For instance, Holosun may restrict warranty service for our products to the country from which Holosun or its authorized dealers originally sold the Holosun product.

Therefore, the purchaser has full responsibility for warranty claims outside the United States, the costs of shipping or transporting the product (including to and from Holosun or our dealer), any insurance or any fees, duties, and taxes.

Additional Warranty Information:

We are aware of NON-AUTHORIZED parties selling COUNTERFEIT Holosun Technologies Inc. products on Amazon. Therefore, regarding this issue, we are alerting our valued customers, retailers, and distributors that Holosun Technologies Inc. is actively working to resolve it. For instance, please note that Holosun Technologies Inc. will NOT honor its Limited Lifetime or Elite Warranty for any products sold on Amazon by Non-Authorized Resellers. Therefore, we recommend that you use caution in buying products from Non-Authorized Resellers as they may not perform as intended.