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HOLOSUN HS503GU Red Dot Sight

HOLOSUN HS503GU Red Dot Sight

Part Number:2719N0303BAT1
Average Rating
Your Price: $249.99
Retail Price:$284.99
Your Savings:$35.00(12%)
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HOLOSUN HS503GU Red Dot Sight

• Designed for day and night use
• New advanced technology LED allows up to 50,000 hours of operation on one CR2032 battery
• 2 MOA on dot size
• Reduced training time and ammunition
• Unlimited field of view
• Parallax-free with unlimited eye relief
• Unaffected by extreme weather conditions
• Durable and reliable construction
• Low mount and 1/3 Co-witness mount included

Holosun continues to break the mold and buck the traditional trends with its creativity and innovation. 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. The “G” signifies that the battery is side mounted on the side of the optic. The “U” signifies a housing design that shrouds the windage and elevation turrets on two sides. Employing new LED technology, the lifetime for one CR2032 battery can reach 5 years on the 2 MOA dot. Holosun’s “Shake Awake” technology automatically turns the optic on at the slightest movement and goes to sleep when the optic senses no movement.

Visible and Accurate

The LED lit, parallax-free 2 MOA dot (brightness settable) is perfect for shooting steel. Brightness is controlled in 11 stages with easy to find yet protected rubber’+’ and ‘-‘ buttons.


The HOLOSUN HS503GU is rugged and made for the outdoors. Armed with an IP67 (Ingress Protection) rating this sight can be immersed in water up to 1 meter and is completely protected from any physical dust particulates. In addition, the sight ships with fast removable lens protectors and protective caps for elevation and windage adjustments.


The HOLOSUN HS503GU is designed to give users options. Whether you use Picatinny or Weaver standards this sight will mount to any rail system. It ships with both a quality low-rise and high-rise mount to fit virtually any firearm. Unlike other sights on the market, there is no need to spend extra money on expensive aftermarket accessories to mount the sight on your gun.


Windage and elevation adjustment knobs are protected with covers until you are ready to tweak. Each click equals a .5 MOA value for a wide range of adjustability.

Full Specs:

Light Source    LED
Reticle    2MOA Dot & 65MOA Ring
Parallax Free    Yes
Unlimited Eye Relief    Yes
Magnification    1x
Multi-Coatings    Yes
Integrated Laser    No
Battery Type    CR2032
Battery Life    Up to 50,000 Hours
Brightness Setting    10 Daylight & 2 NV Compatible
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
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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