The HS503CU Circle Dot is a compact red dot sight offering a 2 MOA dot or a 2 MOA dot with a 65 MOA circle reticle pattern. Employing new LED technology, the life time for one CR2032 battery can reach two years if left on constantly. However, the solar technology and automatic brightness features work together to extend the battery life dramatically beyond that for the average shooter. Featuring a housing design that shrouds the windage and elevation turrets on two sides. Perfect for shotguns, pistols, rifles, air rifles, and crossbows.


  • 2 MOA dot and 65 MOA Circle
  • Reduced training time and ammunition
  • Unlimited field of view
  • Parallax-free with unlimited eye relief
  • Durable and reliable construction
  • Low mount and 1/3 co-witness mount included

Holosun HS503CU Multi-Reticle Circle Dot 20mm Micro Reflex Sight

  • Specifications


    Battery Life:  50000 Hours

    Battery Type:  CR2032 3V Lithium Coin

    Brand:  Holosun

    Brightness:  12 Settings

    Click Value:  1/2 MOA

    Finish:  Plasma Electrolytic Oxidation

    Material:  Aluminum - 6061-T6

    Night Vision Compatible: Yes

    Reticle:  65 MOA Circle 2 MOA Dot

    Reticle Color:  Red

    Warranty:  Limited lifetime

    Weight:  6.4 Oz.