FREE SHIPPING on Over 250,000 Products

852彩票开户 now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.


We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you decide that your purchase just isn't for you, simply return the item within 30 days of receipt and we'll cover the cost of return shipping. Learn more about our Return Policy.

852彩票开户ping Cart

Best Rated Product

Our customers have spoken – this is one of the best rated products in the Red Dot Sights category! See more best rated Red Dot Sights products
Government Export Restriction Government Export Restriction

4 Models Available

Illumination Color
Included Accessories
852彩票开户 By Price
Included Accessories: Standard Illumination Color: Red



UPC: 605930624991

$364.69 Save 15%
Receive ?$6.20?OP Bucks
Included Accessories: Standard Illumination Color: Green



UPC: 852彩票开户605930624953

$399.99 Save 15%
Receive ?$6.80?OP Bucks
Included Accessories: 510C Quick Detach Mount Illumination Color: Red

Code: 852彩票开户28Y-RD-ORFHGR-HS510C-FDE-R-KIT2


Receive ?$7.92?OP Bucks
Included Accessories: 510C Quick Detach Mount Illumination Color: Green



Receive ?$8.52?OP Bucks
Click to select this item for your bundle offer!

Buy Together and Save

As low as $325.98
You Save Up to 15%
Receive ?$8.84?OP Bucks
Free shipping* & free returns*

Product Info for OpticsPlanet Exclusive Holosun 1x Open Reflex Sight

The Holosun 1x Open Reflex Sight utilizes an open frame to bring you an unparalleled wide sight picture that lets you get a better view down range while still providing an incredibly reliable aiming point, even in low light conditions. To conserve energy and resources, these Red Dot Sights by Holosun are powered by a solar cell under normal use but use a back-up battery in darker environments. Thanks to advanced LED technology, a single CR2032 battery can last up to 50,000 of operations. Delivering unmatched comfort and ease of use, the Holosun HS510C Circle Dot Sight gives shooters a parallax free experience with unlimited eye relief. The titanium-alloyed shock-resistant housing is prepared to handle the recoil from your rifle and is durable as ever. Equip the Holosun 1x Open Reflex Optic852彩票开户 to get an accurate point of aim at any time of day.

WARNING: California`s Proposition 65

Specifications for OpticsPlanet Exclusive Holosun 1x Open Reflex Sight:

Color: Flat Dark Earth
Finish: Matte
Magnification: 1 x
Objective Window Size: .91x.1.2 in
Reticle: 65 MOA Circle, Dual, 2 MOA Dot
Illumination Type: LED
Brightness Settings: 12
Eye Relief: Unlimited
Adjustment Type: MOA
Adjustment Click Value: 0.5 MOA
Parallax: Parallax Free
Optical Coating: Multi-Coated
Attachment/Mount Type: QD Mount
Battery Type: CR2032
Battery Life: 20,000 - 50,000 hours
Operating Temperature: -22 - 140 Fahrenheit
Water Resistance Level: IP67
Length: 3.3 in
Width: 1.6 in
Height: 1.8 in
Weight: 8.3 oz
Magnification Type: Fixed
W/E Travel at 100 Yds: +/-50 MOA

Features of Holosun 1x Open Reflex Sight:

  • 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
  • Dot only, Ring only, or Dot and Ring reticle combinations
  • Unlimited field of view
  • Titanium-alloyed, shock resistant hood
  • Powered by both battery and solar
  • QD integrated

Package Contents:

  • Holosun 1x Open Reflex Sight, Multi-Coated HS510C
  • Extra Battery Tray
  • Adjustment Tool
  • Torx Wrench

OpticsPlanet Exclusive Holosun 1x Open Reflex Sight Orderable Models

List of Orderable Models

OpticsPlanet Exclusive Holosun HS510C 1x Open Reflex Sight, Red Dual Reticle, FDE HS510C-FDE-R , MPN: HS510C-FDE-R , UPC: 605930624991 , Code: 28Y-RD-ORFHGR-HS510C-FDE-R
OpticsPlanet Exclusive Holosun HS510C 1x Open Reflex Sight, Green Dual Reticle, FDE HS510C-FDE-G , MPN: HS510C-FDE-G , UPC: 605930624953 , Code: 28Y-RD-ORFHGR-HS510C-FDE-G
OP Exclusive - Holosun HS510C 1x Open Reflex Sight, Red Dual Reticle, Flat Dark Earth, HS510C-FDE-R with American Defense Manufacturing Holosun 510C Titanium Quick Detach Mount , MPN: HS510C-FDE-R-KIT2 , Code: 28Y-RD-ORFHGR-HS510C-FDE-R-KIT2
OP Exclusive - Holosun HS510C 1x Open Reflex Sight, Green Dual Reticle, Flat Dark Earth, HS510C-FDE-G with American Defense Manufacturing Holosun 510C Titanium Quick Detach Mount , MPN: HS510C-FDE-G-KIT2 , Code: 28Y-RD-ORFHGR-HS510C-FDE-G-KIT2

OpticsPlanet Exclusive Holosun 1x Open Reflex Sight Unavailable & Discontinued Models

List of Unorderable Models

Product Videos
Questions & Answers
I'm wonder how clear the reticle is- I saw an eotech the other day and it was incredibly fuzzy without a magnifier. Should the reflex be clearer? Featured Answer

The reticle on the Holosun is very clear.

The reason the Eotech seemed fuzzy is because it’s a true Holographic sight. That is, the reticle is projected onto the glass vs. the Holosun which is a Red Dot Site with the Circle / Dot Reticle.

When using the Eotech, it’s meant to look through to the target. When you are focusing on the target and not the reticle it will clear up

by Eric Wilson, Verified Owner, October 22, 2018
Whats the difference between this and the HE510C-GR (Elite) other then the body color... Expert Answer

The green reticle version is the same as item HE510C-GR, just a different color. The red reticle version just has that different reticle color as well.

by Ethan C., Gear Expert, July 10, 2018
Customer Reviews
Expert Review
Solid Reflex Sight by Matt S., Gear Expert, April 12, 2018
Pretty impressed with this sight. Good sized window and while I mostly run the circle dot reticle, I like having the option to switch to just a dot reticle. Controls are on the side and easy to use. Opposing side battery tray means you don't have t...
10/11 found this helpful
Helpful Positive Review Excellent Reflex Sight by spencer, Verified Owner, January 27, 2018
First of all, I hardly ever take the time to write reviews. So if I review something, its either really good or really bad. I'd like to shout out to Holosun customer service. I was waiting for this FDE model with the green reticle on preorder and I ...
60/63 found this helpful
Helpful Negative Review Not professional grade by David Johnson, July 10, 2018
Own many red dots. EO, trijicon, burris, vortex, picked up this for ar10. Alignment of circle dot is slightly skewed. Not garbage, but will be going on my 22. I find anything with multiple reticle choices to be less than perfect. For 300, there are b...
6/22 found this helpful
Most Recent Reviews quality products you can depend upon by Mike D, April 3, 2020
Even during the zombie apocalypse. They shipped out. Boxed competently and completely. Great communication and updates throughout the process. The price was the cheapest you'll find as well. I'm very happy. Now to zero and enjoy my new optic
Most Recent Reviews Thus is the best bang for any buck!! by Joseph Gilliam, Verified Owner, March 18, 2020
This is the best Bang for any buck better than it yellow tag has shaken awake so when I pick it up it turns on and turns off after so long also has the green radical also has a 50000 hour battery life and is solar operated you cannot beat this for th...
Read All 80 Reviews
Compare (0)