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Questions & Answers
Will this work with the Sig P320 AXG Scorpion? Expert Answer

It will not fit without an adapter. The P320 AXG Scorpion is machined to accept a Romeo1 PRO or Leupold Delta Point PRO. To install an RMR-pattern red dot like the Holosun 407/507 models requires an adapter that changes the mounting pattern of your slide.

by Armando R., Gear Expert, March 4, 2021
Customer Reviews
Expert Review
Excellent Optic by Jeremy, Gear Expert, July 28, 2021
I was skeptical about putting a miniature red dot sight(MRDS) on my handguns when they first came out. The process and price at the time seemed like a hassle. These days however its easy to find a milled slide or a local gunsmith who can mill your ...
Read More...
33/35 found this helpful
Expert Review
Holosun Listens by Matt S., Gear Expert, January 5, 2021
the original 507c was a great option added to the pistol mounted RDS market. the X2 version provides the updates end users wanted: subdued logo/finish side access battery means you dont need to remove the sight to replace the battery Everything e...
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Helpful Positive Review Holosun is awesome by Jeff585, Verified Owner, November 29, 2020
Shame on Trijicon for suing Holosun. They make an overall better product at a lower price. Shake awake, auto dim, "forever" battery life, side door for battery replacement. It is a great reflex sight at a reasonable price.
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Helpful Positive Review 507 C acss Vulcan by BYN, Verified Owner, December 5, 2024
I have an astigmatism and this is the only optic l use right now that doesn’t starburst badly. The 10 moa chevron is excellent for me in this regard and my second one. Haven’t tried the green one yet but the red does the job.
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Helpful Positive Review My first green dot. by Denton Hubbard, Verified Owner, March 24, 2025
I was very impressed with the quality of the Holoson 507C green dot. I like the different cross hair options, however I think I have settled on the dot. I mounted it on a Ruger Mark iv Target with a 10" barrel. After over 300 rounds it is stil...
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1/1 found this helpful
Helpful Positive Review Perfect For My XDM Elite 5.25" by VideoGeek, Verified Owner, February 11, 2025
I put on a Red Dot Slide Adapter on my XDM Elite 5.35" 9mm pistol. It works great at the indoor range. I took it to an outdoor range and was able to hit a steel plate at 50 Yards 70% of the time too. I really enjoy this Holosun 507C-X2 Red Dot.
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Read All 394 Reviews
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Product Info for Holosun HS507C-X2 1x 2 MOA Dot Reflex Red Dot Sight

The Holosun HS507C-X2 1x 2 MOA Dot Reflex Red Dot Sight is the updated version of their popular HS507C red dot, and this reflex sight is the perfect optic to improve your accuracy and performance with your pistol, rifle, or shotgun in close to medium-range engagements. Holosun designed these reflex sights with multi-coated lenses for clear views in any environment, and these Red Dot Sights offer unlimited eye relief for maximum comfort while practicing at the range or protecting others in the field. This open reflex weapon sight offers some upgrades over its predecessor, including Lock Mode to prevent accidental operation and an ergonomic button layout for easy access.image

The HS507C-X2 1x 2 MOA Dot Reflex Red Dot Sight is perfect for CQB engagements, and you can get up to 50,000 hours of battery life per use. What's more, you have access to 12 brightness settings and multiple reticle options so that you can best match your reticle to your ambient lighting conditions, and two of those settings are compatible with night vision devices. The Holosun HS507C-X2 1x 2 MOA Dot Reflex Red Dot Sight is available with a circle-dot reticle or the ACSS Vulcan reticle. If you want to improve your reaction time and precision with your pistol, pick up this Holosun reflex sight and unleash your full potential.

Mount Not Included.

What is the difference between Holosun 507C X2 and 507C V2?

The Holosun 507C V2 reflex sight was the second generation of the 507C series and has been discontinued. The Holosun 507C X2 is the third generation of the 507C series and is currently available for purchase. The X2 version is essentially the same as the V2 series, except the size and location of the buttons are different. Holosun 507C-X2 reflex sights also provide updated features like Lock Mode and a side-access battery tray.

What is the difference between Holosun HE507 and HS507?

The Holosun HE507 features a green reticle, while the Holosun HS507 offers a classic red reticle.

What is the difference between Holosun 507C X2 and 507K X2?

The Holosun 507K X2 is smaller and lighter than the 507C X2. However, the 507C X2 has a built-in solar panel, but the 507K X2 does not.

WARNING: California`s Proposition 65

Specifications for Holosun HS507C-X2 1x 2 MOA Dot Reflex Red Dot Sight:

Manufacturer: Holosun
Magnification: 1 x
Illumination Type: LED
Eye Relief: Unlimited
Adjustment Type: MOA
Adjustment Click Value: 1 MOA
Water Resistance Level: IP67
Weight: 1.5 oz
Condition: New
Quantity: 1
Red Dot Sights-Footprint: RMR

Features of Holosun HS507C-X2 1x 2 MOA Dot Reflex Red Dot Sight:

  • Great for handguns, rifles, PCCs, and shotguns
  • Solar failsafe
  • Exclusive, patent-pending ACSS Vulcan reticle
  • Large outer reference circle can be deactivated per user preference
  • 10 MOA center chevron
  • 2 Reticle modes
  • Shake awake technology
  • Red LED
  • Multicoated glass
  • 7075-T6 aluminum construction
  • Black hardcoat anodized
  • Convenient battery tray
  • Up to 20,000-hour battery life
  • Powered by (1) CR1632 Li Ion Battery
  • Holosun Limited Lifetime Warranty

Package Contents:

  • Holosun HS507C-X2 1x 2 MOA Dot Reflex Red Dot Sight

Holosun HS507C-X2 1x 2 MOA Dot Reflex Red Dot Sight Orderable Models

List of Orderable Models

Holosun HS507C-X2 Reflex Red Dot Sight, 2 MOA Dot & 32MOA Circle Reticle, Black, HS507C-X2 , MPN: HS507C X2 , UPC: 810047071174 , Code: 28Y-RD-HOL203-HS507C-X2
Holosun OPMOD HS507C-X2 Reflex Red Dot Sight, Red 2 MOA Dot and 32 MOA Circle, Wolf Gray , MPN: HS507C-X2 WG-KIT2023 , Code: 28Y-RD-HOL203-HS507C-X2-WG-KIT2023
Holosun OPMOD HS507C-GR-X2 Reflex Red Dot Sight, Green 2 MOA Dot and 32 MOA Circle, Wolf Gray , MPN: HE507C-GR-X2 WG-KIT2023 , Code: 28Y-RD-HOL203-HE507C-GR-X2-WG-KIT2023
Holosun HS507C-X2 Reflex Red Dot Sight, ACSS Vulcan Reticle, Black, HS507C-X2-ACSS , MPN: HS507C-X2-ACSS , UPC: 810047071143 , Code: 28Y-RD-HOL203-HS507C-X2-ACSS
Holosun HE507C-GR-X2 Green Dot Reflex Sight, ACSS Vulcan Reticle, Black, HS507C-GR-X2-ACSS , MPN: HS507C-GR-X2-ACSS , UPC: 810047071365 , Code: 28Y-RD-HOL203-HS507C-GR-X2-ACSS
Holosun HE507C-GR-X2 Green Dot Sight 1x, 2 MOA Dot & 32 MOA Circle, Black, HE507C-GR-X2 , MPN: HE507C-GR X2 , UPC: 810047071280 , Code: 28Y-RD-HOL203-HE507C-GR-X2

Holosun HS507C-X2 1x 2 MOA Dot Reflex Red Dot Sight Unavailable & Discontinued Models

List of Unorderable Models

DEMO, Holosun HE507C-GR-X2 Green Dot Reflex Sight, ACSS Vulcan Reticle, Black, HS507C-GR-X2-ACSS , MPN: HS507C-GR-X2-ACSS-DEMO , Code: 28Y-RD-HOL203-HS507C-GR-X2-ACSS-DEMO

Proposition 65 Warning for California Consumers

For more information go to www.p65warnings.ca.gov

Notification

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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