Holosun HS503GU Red Dot Sight Review

Published on February 22, 2018
Duration: 12:23

This review of the Holosun HS503GU red dot sight highlights its dual reticle system (2 MOA dot or 65 MOA circle with 2 MOA dot), easy battery access via a side-mounted CR2032 compartment, and robust construction. Tested extensively on an AR-15 pistol, the sight demonstrated reliability with over 400 rounds fired, maintaining zero and showing no power issues. It features a 20mm objective lens for a wide field of view, lower 1/3 co-witness, and half MOA adjustments.

Quick Summary

The Holosun HS503GU red dot sight offers a choice between a 2 MOA dot or a 65 MOA circle with a 2 MOA dot. It features a side-mounted CR2032 battery compartment for easy access without losing zero, and boasts an impressive battery life of up to 50,000 hours. Constructed from durable 6061 T6 aluminum, it is fog, waterproof, and shock proof.

Chapters

  1. 00:04Intro
  2. 00:17Welcome & Overview
  3. 01:06Reticle Options
  4. 01:22Changing Reticle
  5. 01:57Glass Quality & Field of View
  6. 02:20Sight Functionality
  7. 03:23Battery Compartment & Type
  8. 04:03Battery Access Comparison
  9. 05:11Battery Life Specs
  10. 05:29Reticle Preference
  11. 06:31Co-witness & Mounting
  12. 06:46Adjustment Turrets
  13. 07:18Click Value & Sealing
  14. 08:17Construction Material
  15. 08:48Weight & Size
  16. 09:13Mount Compatibility
  17. 10:05Performance Summary
  18. 10:23Recommendation
  19. 11:07Purchase Information
  20. 12:02Outro

Frequently Asked Questions

What are the reticle options for the Holosun HS503GU?

The Holosun HS503GU offers two reticle choices: a precise 2 MOA dot, or a combination of a 65 MOA circle with a 2 MOA dot in the center. This allows users to select the reticle that best suits their aiming style and target acquisition needs.

How is the battery accessed on the Holosun HS503GU?

The HS503GU features a convenient side-mounted battery compartment for a single CR2032 battery. This design allows for easy battery replacement without needing to remove the optic from the firearm, thus preserving your zero.

What is the battery life of the Holosun HS503GU?

On setting six with only the 2 MOA dot, the battery life is estimated at 50,000 hours. When using the 65 MOA circle with the 2 MOA dot on brightness level six, the battery life decreases to approximately 20,000 hours.

What are the construction and durability features of the Holosun HS503GU?

Constructed from 6061 T6 aircraft-grade aluminum, the HS503GU is built for durability. It is also designed to be fog proof, waterproof, and shock proof, ensuring reliable performance in various environmental conditions.

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