Holosun HS403R Micro Red Dot Sight

Holosun HS403R Micro Red Dot Sight

$199.99 $189.99

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Availability: In stock SKU: HS403R


HOLOSUN HS403R Micro Red Dot

New Rotary control for faster operation!

The Holosun HS403R Micro Red Dot is a small compact micro red dot optic that features Holsun’s new rheostat dial to adjust brightness settings. This new intensity control brings you everything you love about a Holosun, only faster! Employing Holosun’s ultra-efficient LED technology, The HS403R can achieve a“constant on” battery life of up to 5 years.  A parallax free 20mm objective lens and unlimited eye relief, the 2 MOA dot reticle of the HOLOSUN HS403R allows for quick target acquisition from practically any shooting position. The HS403R is waterproof to 1 meter, and compatible with standard mounts.


• New rotary control for faster operation and visual brightness indicator • Advanced technology LED allows up to 100,000 hours of operation on one CR2032 battery
• 2 MOA on dot size
• Unlimited field of view
• Parallax-free with unlimited eye relief
• Durable and reliable construction
• Low mount and 1/3 Co-witness mount included

Package Contents

– Holosun HS403R
– Low Mount
– 1/3 Co-Witness High Mount

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Product Information

Manufacturer: Holosun
Item #: HS403R
Reticle: 2MOA dot
Illumination Color: Red
Parallax Free: Yes
Adjustment per click: 0.5 MOA
Window Size: 20mm Diameter
Eye Relief: Unlimited
Magnification: 1X
Battery Type: CR2032
Battery Life:  Up to 100,000 hours | 5 years
Brightness Setting: 10 daylight & 2 NV Compatible
Housing Material:  6061 Aluminum
Water Resistant: 1 meter
Central Height: 1.63″
Weight: 3.53oz
MSRP: $199.99

Arm or Ally is a stocking dealer for  Aero Precision, Faxon, Polymer80, Ballistic AdvantageToolcraft, SB Tactical, Holosun and more. See our growing inventory of AR Parts, Firearms and Reloading Components.

Additional information

Weight 13 oz
Dimensions 5.5 × 3.5 × 3 in




Part Type


Optic Platform


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