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Reviews & Ratings for Holosun HS507K X2 Compact Pistol 2x 0.58 x 0.77 in Reflex Red Dot Sight — 92 reviews

(92 reviews)
Holosun HS507K X2 Compact Pistol 2x 0.58 x 0.77 in Reflex Red Dot Sight
Holosun HS507K X2 Compact Pistol 2x 0.58 x 0.77 in Reflex Red Dot Sight
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Most Helpful Positive Review HS507k x2 ACSS = rambo mode
Ok, it won't make you Rambo - but it has improved my draw to first shot and my 15yards+ shot accuracy significantly. It was waaay off zero after I mounted the optic, but was extremely easy to set on the right path. I put the 507k on my new Canik MC9, direct mount to the slide and no plates needed. L...
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Most Helpful Negative Review battery life sucks
I don't see any reviews like this, so maybe I got a lemon, but my battery only lasts about two months. It'll start to blink about every minute for a day, and then it dies completely. I dont know what's up with it, but it's not cool.
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Hall son 507K

by Daniel Diefenbach, Verified Owner from MD, United States Written on August 28, 2026
Great product made well. Does the job easy use comes with screws fits perfectly. Also has Co witness sites?
Would recommend: Yes
Was it helpful to you? Yes | No
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Holosun sites

by Jako, Verified Owner from FL, United States Written on August 25, 2026
This is my fifth Holosun site on several different pistols. They all have been excellent and work as described.
Would recommend: Yes
Was it helpful to you? Yes | No
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Perfect for application

by OhioShooter, Verified Owner from OH, United States Written on August 8, 2026
I tried a few different optics on friends Ruger Mk IVs. The Holosun was the best for money and performance of the few units I tried. Nice profile with the pistol and able to pick up the light immediately. The stock setting is a little bright but it is easy enough to dim it a little to suit my eye. Highly recommend this optic in combination with a low profile mount.
Would recommend: Yes
Was it helpful to you? Yes | No
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Holosun 507K

by Rick, Verified Owner from FL, United States Written on July 8, 2026
Great red dot, bought it for my Glock 19X like the circle dot combination
Would recommend: Yes
Was it helpful to you? Yes | No
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HS507K X2 Compact Pistol Red Dot Sight

by Ronald Yeakel, Verified Owner from MA, United States Written on May 29, 2026
Very nice optic. Fits and works well on my HK's (CC9 and VP9CC).
Would recommend: Yes
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No screws included for 43x FDE

by Annoyed customer, Verified Owner from MI, United States Written on May 26, 2026
If you are buying this for Coyte 43x with K optics mount- this does not come with the screws needed. A bit ridiculous for a $300 optic. So now I have to wait a few more days and spend more money to buy the correct screws. Other than that I can’t give it anymore feedback because I can’t use it.
Pros:
  • Couldnt tell you
Cons:
  • Not compatible with Glock 43x Coyote
Would recommend: No
0 of 1 found the following review helpful.
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Holosun 607k

by Kyle, Verified Owner from NJ, United States Written on May 24, 2026
Fast shipping l.. here faster than expected...love th sight beautiful n small jus perfect for a carry
Pros:
  • Best shipping was here faster than expected..
Cons:
  • Need an adapter plate... had #3 plate from glock but nipples to high.
Best Used for:
  • Shoooting..funn..carry wepon of choice
Would recommend: Yes
Was it helpful to you? Yes | No
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Quality Red Dot!

by Mongo, Verified Owner from VA, United States Written on May 13, 2026
The HS507K X2 super easy to install on my Sig P365XL - took about 10 mins from start to finish. It has a solid build feel and I love the circle & dot combo. Super bright on highest setting although I lean towards the middle position most times.
Pros:
  • Price
  • Ease of use
  • solid construction
  • easy installation
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No
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Great Product

by KK, Verified Owner from FL, United States Written on May 2, 2026
I have never used a red dot before. This is my first one. Easy to use with a nice bright dot. Using it on my competition pistol
Would recommend: Yes
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Neat small RD.

by Flipdog1, Verified Owner from TN, United States Written on April 10, 2026
Looks like it was made specifically for this pistol.
Would recommend: Yes
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Last updated 2025-11-12 UTC.