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In stock
Holosun HS503R 2 MOA Micro Red Dot - HS503R
In stock

Holosun HS503R 2 MOA Micro Red Dot - HS503R

SKU 176558
Brand Holosun
Model Number HS503R
UPC 605930625301
Customers must read Compliance Information before purchasing.

Product Details


  • Magnification: 1x
  • Objective: 20mm
  • Brightness Settings: 10 Daytime, 2 NV
  • Battery: CR2032 (1)
  • Housing: Aluminum
  • Adjustment: 0.5 MOA
  • Weight: 3.74 oz
  • Dimensions: 2.75”x1.43”x1.62”
  • Reticle: 2MOA Dot, 65 MOA Ring
  • Parallax Free: Yes
  • Eye Relief: Unlimited


The HS503R is a small compact micro red dot optic that features Holosun’s new Rheostat Dial to adjust brightness settings. Employing LED technology, The HS503R can achieve “constant on” battery life of up to 100,000 hours on medium setting. This optic features Holosun’s proprietary Multi-reticle System (MRS) giving the user 2 reticles to choose from.


  • 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
  • Unlimited field of view
  • Parallax-free with unlimited eye relief
  • Durable and reliable construction
  • Low mount and 1/3 Co-witness mount included


Q & A

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All NFA Rules Apply.
These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.