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Questions & Answers
how many yards can you comfortably shoot with this? Expert Answer

The Holosun HS510C Circle Dot Sight w/HM3X Magnifier Combo allows for 3X magnification. This means when using the HM3X Magnifier the object you are viewing will appear 3X larger than what it would if you were viewing it with the naked eye. How far you can shoot will depend on the conditions you are shooting in as well as the shooters ability. There is not a specific distance that can be given.

by Hunter, Gear Expert, July 11, 2023
Will this combo fit on an AR-15 upper with a Magpul MBUS Pro rear iron sight? Expert Answer

Yes, it will fit just fine with the MBUS sights.

by Ben, Gear Expert, June 8, 2021
Customer Reviews
Helpful Positive Review
Holoson reflex optic by Squatch, October 24, 2023
Have not been able to try it at the range yet but it looks like a great optic.
1/11 found this helpful
Helpful Positive Review
This will be in depth but it will hopefully be everything you need to determine if this is your next purchase or not. As for the 510, this thing is riddled with so many features that the only edge that an EOTECH might have on it anymore is the name a...
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12/12 found this helpful
Helpful Positive Review
Great combo by Red, October 21, 2023
Packaging is top notch. Both sight and magnifier come with 1/3 co witness risers for mounting. Quick detach is nice and still secures to rail solidly
3/3 found this helpful
Helpful Positive Review
big fan of this combo, prefer this to lower end scopes. very easy to attach with quick release system, and easy to dial in. it came surprisingly accurate out of the box, and everything was packaged nicely. definetly recommend for ar15 applications.
1/2 found this helpful
Helpful Positive Review
Holosun red dot by Noname, Verified Owner, June 1, 2025
Great price and awesome quality. Shake awake feature is awesome. You dont have to shake it. Just pick up your rifle and aim. It'll be on when you look thru the reticle. Crisp red dot. Awesome eye relief.. works without a battery. Thats amazing. Charg...
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1/1 found this helpful
Helpful Positive Review
If you’re looking for a high-quality, battle-ready optic setup without breaking the bank, the Holosun HS510C Circle Dot Sight paired with the HM3X Magnifier is hands-down one of the best investments you can make. Whether you’re running drills at the ...
Read More...
2/2 found this helpful
Read All 104 Reviews
15% Bonus Bucks
Get even more OpticsPlanet Bucks with the purchase of select models to use on future purchases! You will find the amount you'll earn near eligible models.
Color:
Black
Reticle:
Multi-Reticle
Illumination Color:
Red
Included Accessories:
Protective Storage Case
Condition:
New
Quantity:
1
Red Dot Sights-Footprint:
Not Applicable

Code: 28Y-RD-H3XRS-HS510C-HM3X-COMBO

MPN: 510C&HM3X

UPC: 605930625721

15% Bonus Bucks
List: $570.58Save 15%
$484.99

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OP Bucks$72.75

Product Info for Holosun HS510C 3x Circle Dot Sight w/HM3X Magnifier Combo

Equip this Holosun HS510C Circle Dot Sight w/HM3X Magnifier Combo to adapt to CQB and longer-range scenarios in an instant. Holosun designed these Red Dot Sight Magnifiers with their Multiple Reticle System (M.R.S.) that allows you to seamlessly switch between a 65 MOA circle with 2 MOA dot, a 2 MOA dot only or a 65 MOA ring only. The Holosun HS510C Open Reflex Circle Dot Sight w/HM3X Magnifier Combo is powered by both battery and solar energy, and the LED technology allows a single CR2032 battery to provide up to 50,000 hours of operation. These sights are parallax-free and offer unlimited eye relief for the most comfortable experience possible. Get the Holosun HS510C Circle Red Dot Sight w/HM3X Magnifier Combo for two outstanding optics for a great value.image

WARNING: California`s Proposition 65

Specifications for Holosun HS510C 3x Circle Dot Sight w/HM3X Magnifier Combo:

Manufacturer: Holosun
Color: Black
Fabric/Material: Durable Aluminum Housing
Magnification: 3 x
Objective Lens Diameter: 0.91 - 1.26 in
Reticle: Multi-Reticle
Illumination Type: LED
Illumination Color: Red
Eye Relief: 2.75 in
Adjustment Type: MOA
Adjustment Click Value: 0.5 MOA
Emitter Type: Open
Field of View, Linear: 37 ft at 100 yds
Field of View, Angle: 7 degrees
Exit Pupil: 0.29 in
Battery Life: 50000 hours
Weather Resistance: Shock Resistant
Water Resistance Level: IPX-7
Weight: 4.94 oz
Included Accessories: Protective Storage Case
Condition: New
Magnification Type: Fixed
Quantity: 1
Red Dot Sights-Footprint: Not Applicable
Mount Type: Dovetail
Adjustment Range: 0.5 MOA
Attachment Type: Picatinny
Co-Witness: Absolute
Housing/Frame Material: 6061-T6 aluminum

Features of Holosun HS510C Circle Dot Sight w/HM3X Magnifier Combo

  • Multi-Reticle System (2MOA Dot, 65MOA Circle and 65MOA Circle w/2MOA Dot)
  • 50,000 Hour Battery Life
  • Shake AwakeTM & Solar FailsafeTM Technology
  • Absolute and Lower 1/3 Co-witness QR
  • Picatinny Mounting Options
  • Ambidextrous Flip-to-Side Magnifier Mount
  • Protective Storage Case
  • Magnification = 3X
  • 7 degrees FOV (approx. 37ft/100yds)
  • Eye Relief = 70mm/2.75in
  • Exit pupil = 7.6mm/0.29in
  • Durable Aluminum Housing
  • Shockproof and IPX7 Water Resistance

Package Contents:

  • Holosun HS510C Circle Dot Sight w/HM3X Magnifier Combo

Holosun HS510C 3x Circle Dot Sight w/HM3X Magnifier Combo Orderable Models

List of Orderable Models

  • Holosun HS510C Open Reflex Circle Dot Sight w/HM3X Magnifier Combo, Black, HS510C+HM3X COMBO , MPN: 510C&HM3X , UPC: 605930625721 , Code: 28Y-RD-H3XRS-HS510C-HM3X-COMBO

Holosun HS510C 3x Circle Dot Sight w/HM3X Magnifier Combo Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Holosun HS510C Open Reflex Circle Dot Sight w/HM3X Magnifier Combo, Black, HS510C+HM3X COMBO , MPN: HS510C+HM3X Combo-DEMO , Code: 28Y-RD-H3XRS-HS510C-HM3X-COMBO-DEMO
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