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specifications


Manufacturer:

Holosun

Holosun HS503CU Red Dot

Where to buy

Store Price Availability
Rainier Arms $255.99
not checked recently
Check store Buy at Rainier Arms Add to build
Brownells $229.99
checked Sep 27, 2026
Out of stock Buy at Brownells Add to build

Prices and availability change often, so confirm on the store's site before you buy.

Description


The HS503GU is a new micro red dot optic equipped with a 65 MOA circle dot reticle with the option of switching to a 2MOA dot only. Our highly efficient light emitting diodes and solar panels allow Holosun solar optics to run without a battery in many lighting conditions. Additionally, the back-up battery lasts up to 5-years on the dot and up to 2 years on the circle dot. The “U” signifies a housing design that shrouds the windage and elevation turrets on two sides.
 
Features:
•Parallax free with unlimited eye relief.•New advanced technology LED  allows up to 50,000 hours of operation on one CR2032 battery•2 MOA dot and a 65 MOA ring•Unlimited field of view•Parallax-free with unlimited eye relief•Powered by both battery and solar•Low mount and 1/3 Co-witness mount included
 



OPTICAL DATA


Light Source  
  LED


Reticle  
  2MOA Dot & 65MOA Ring


Parallax Free  
  Yes


Unlimited Eye Relief  
  Yes


Magnification  
  1x


Multi-Coatings  
  Yes


Integrated Laser  
  No


ELECTRONIC DATA


Battery Type  
  CR2032


Battery Life  
  Up to 50,000 Hours


Brightness Setting  
  10 Daylight & 2 NV Compatible


MECHANICAL DATA


Housing Material  
  6061 Aluminum


Surface Finish  
  MAO


Housing Color  
  Black


Adjustment per Click  
  0.5 MOA


W&E Travel Range  
  ±50 MOA


Storage Temperature  
  -40? - 158?


Working Temperature  
  -22? - 140?


Submersion  
  IP67


Vibration  
  Up to 1000G


PHYSICAL DATA


Window Size  
  20mm Diameter


Dimension (in)  
  2.44 x 1.18 x 1.45


Weight (oz)  
  6.3


Central Height (in)  
  1.63


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