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Holosun HS503CU Red Dot

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Holosun HS503CU Red Dot


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.



•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


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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Manufacturer Holosun