Holosun HS510C Open Reflex Circle Dot Sight


The HS510C Open Reflex Circle Dot Sight has an open frame for a wide sight picture. 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 at the push of a button.

Better still, the same LED projects both reticles, so no re-zeroing is necessary.

Value for money and top-performance, the Holosun HS510C red dot sight delivers on all fronts. 


  • Reticle size changes 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
  • Solar cell and high capacity battery provide dual power supplies
  • 32mm×24mm open lens
  • Titanium-alloyed, shock resistant protective hood, CNC machined with T6061-T6 housing
  • Quick release mount
  • Adaptable to Picatinny and Weaver rails

The size of LED Circle is 65MOA; the size of dot is 2 MOA. The reticle can be switched between circle dot and single dot.

+ Multilayer Coatings +

Holosun red dot sights and magnifiers are manufactured using optical glass with multilayer coatings applied to facilitate maximum light transmission and wear resistance while reducing glare.


+ Titanium +

Holosun’s use of Grade 5 Titanium in certain Elite Series red dot sights produces unparalleled strength and durability. Holosun Grade 5 Titanium has more than double the tensile strength and as high as five-times the fatigue strength of 7075 Aluminum. Grade 5 Titanium is also able to withstand seawater.

More Information

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 with Titanium Hood
Surface Finish: MAO
Housing Colour: Black
Adjustment per: Click 0.5 MOA
W&E Travel Range: ±50 MOA
Storage Temperature: -40‚Ñâ - 158‚Ñâ
Working Temperature: -22‚Ñâ - 140‚Ñâ
Submersion: IP67
Vibration: Up to 1000G


Window Size: 0.91in x 1.2in
Dimension: (in) 3.3 x 1.6 x 1.8
Weight: (oz) 8.3
Central Height: (in) 1.41

Holosun HS510C Open Reflex Circle Dot Sight