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Holosun HS403C

Holosun HS403C



The HS403C Paralow has two power systems, one is operated by solar power only while the other operates on battery only.  Out of the box, this red dot is automatically solar powered.  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 so you can adjust the intensity by pressing "+" or "-" buttons.

You can verify the power mode by covering the solar cell.  If the red dot is on, you are in battery mode.  If it is off, you are in solar mode.


  • Designed for day use and night vision
  • Advantage technology LED  allows 50,000 hours of operation on one battery
  • 2 MOA on dot size
  • Unlimited field of view
  • Parallax-free with unlimited eye relief
  • Unaffected by extreme weather conditions
  • Low mount and 1/3 Co-witness mount included


Color: Black
Finish: Micro Arc
Fabric/Material: CNC Aluminum
Magnification: 1 x
Objective Lens Diameter: 20 mm
Reticle: 2 MOA Dot
Illumination Type: LED
Illumination Color: Red
Eye Relief: Unlimited
Adjustment Click Value: 0.5 in at 100 yds
Lens Material: Glass
Optical Coating: Multi-Layer Reflecting
Attachment/Mount Type: Low Profile, 1/3 Co-Witness Mount, Quick Release
Battery Type: CR2032
Battery Life: Up to 5 years
Operating Temperature: 22 - 140 Fahrenheit
Water Resistance Level: Waterproof
Water Resistant Mark: 1 m
Length: 63 mm
Width: 30 mm
Height: 58 mm
Weight: 124 g
Included Accessories: 1/3 Co-witness Mount, Low Mount
Package Type: Box
Magnification Type: Fixed
Brightness Index: 2NV / 10DL
Tube Diameter: 22 mm
W/E Travel at 100 Yds: 50 MOA


  • Holosun Paralow Red Dot Sight, 2 MOA Dot, Parallax-Free, Solar Power & Battery Tray
  • Lower 1/3 Co-witness Mount
  • Low Profile Mount
  • T10 L Key
  • Rubber Cover
  • User Manual
  • CR2032 Battery
  • Lens Cloth

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