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Holosun HS510C Solar Circle Dot Reflex Sight

  • The Holosun HS510C Open Reflex Circle Dot Sight has an open frame for a wide sight picture. Always on, it is powered by solar cell under normal usage, and a back-up battery to supplement power requirements in low light conditions. The reticle can be switched between a 65 MOA circle with 2 MOA dot, or a 2 MOA dot only at the push of a button. Better yet, the same LED projects both reticles, so no re-zeroing is necessary. 


    • When focussing on the target, the size of the reticle will change based on the distance between your eyes and objective lens.
    • Parallax free optical design, with unlimited eye relief.
    •  Minimized obstruction of vision with push button controls and a streamlined housing design.
    • Switchable circle/dot and red dot reticles.
    • Always on unless manually turned off.
    • Internal battery tray design.
    • 32mm×24mm open lens.
    • Solar cell and high capacity battery provide dual power supplies.
    • Titanium-alloyed, shock resistant protective hood.
    • Includes accessory AR riser.
    • Quick release mount .
    • Adaptable to Picatinny and Weaver rails.
    • CNC machined with T6061-T6 housing.
    Reticle 2 MOA Dot; 65 MOA Circle
    Parts No. HS510C/ 605930624571
    Light source LED
    Parallax Parallax free
    Eye Relief Unlimited
    Coating Multi-layer coating for all lens.
    Magnification 1X
    Battery CR2032
    Battery Life 50,000 hours for circle dot at mid brightness setting 20,000 hours for single dot at mid brightness setting
    Brightness Setting 10 DL & 2 NV compatible
    Housing Material Aluminum
    Housing Finish PEO/MAO housing finish
    Housing Color Black
    Adjustment per Click 0.5 MOA
    Storage Temperature -40C to 70C
    Working Temperature -10C to 50C
    Waterproof 1M
    Dimension 91*65*40 mm
    Weight 264g
  • The MSR Arms Advisor articles are intended to answer some of the most common shooter questions and assist our customers in making the best purchasing decision possible.
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  • No questions have been submitted regarding this product. If you have a question regarding this, or any of our other products, please submit them by emailing We will return your email promptly and post both the question and answer here for our other customers to view. Remember, there are no dumb questions... Thank you, MSR Arms!

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