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Reviews & Ratings for Holosun HS507K X2 Compact Pistol 2x 0.58 x 0.77 in Reflex Red Dot Sight — 79 reviews

(79 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
As Low As $295.99 Save Up to 21%
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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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Compact and effective red dot for Sig X-macro

by Orv W, Verified Owner from TX, United States Written on November 4, 2025
Installation of my Sig X-macro was straightforward and easy. I was able to use existing iron sights as BUIS, a real savings not having to purchase new ones!

Once zeroed, I've had no issues with the 507K retaining zero after about 400 rounds. Still working to figure out which I like better, the automatic or manual brightness adjustment. As a lefty, the brightness adjustment is a bit awkward to use.
Pros:
  • compact
  • Holds zero
  • Didn't need new BUIS
Cons:
  • Brightness adjustment for lefty
Best Used for:
  • EDC
Would recommend: Yes
Was it helpful to you? Yes | No
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Holosun 507k Compact Red Dot

by JAMES VAIL JR, Verified Owner from SD, United States Written on September 6, 2025
First of all Opticsplanet is fabulous to do business with. I'm an old school 1911 shooter and am somewhat new to the use of Red Dot Sights. I ordered a 507C to put on a S&W CSX-E Micro Compact Pistol when a 507K Compact Sight was the better fit. Opticsplanet did a quick exchange for me without any extra fees. I have run a few hundred rounds through the pistol and everything has run flawlessly. Thank you-Jim
Pros:
  • very accurate and affordable
Cons:
  • None
Best Used for:
  • slim slides
Would recommend: Yes
1 of 1 found the following review helpful.
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Screw Warning 43x&48

by Brad, Verified Owner from CO, United States Written on September 2, 2025
If you are mounting this to a 43x or a 48,you will have to reach out to Holosun to get the correct screws. The right side screw is shorter than the left. If you install with the included screws, the right side screw will hit the ejector. Holosun sent the proper screws out for free and only takes 2-3 days. The sight itself is fantastic
Would recommend: Yes
Was it helpful to you? Yes | No
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Amazing Pistol Optic

by Solaire, Verified Owner from OH, United States Written on August 23, 2025
This pistol optic is probably the best pistol optic I've ever used. Obviously the Holosun HS507K speaks for itself: Its a sturdy aluminum body with fairly clear glass (only a slight bluish tint, barely noticeable), easily swappable batteries and easy to use controls to change the brightness.

The ACSS reticle is a game changer though for training. It gives you immediate visual feedback when you're not holding the pistol correctly, which can help you tweak your grip and movement.
Would recommend: Yes
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FAST on target with ACSS Vulcan

by armed leftist, Verified Owner from OH, United States Written on August 23, 2025
Upgraded to this from a Shield SMSc that came on my Springfield Hellcat OSP. It did require the use of an adapter plate for this setup. This is so much better than the Shield. The outer ring reticle allows my brain to very quickly understand and execute movements needed to put the dot in the center almost immediately. Sure, probably a skill/practice issue, but I appreciate the short cut and advantage.
Pros:
  • QUALITY OPTIC
  • Shake awake
  • ACCS Vulcan Reticle is fantastic
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No
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Holosun HS507K

by tw, Verified Owner from GA, United States Written on August 3, 2025
Works great. Clear red dot. Installed on M&P Shield sub compact. Fits perfectly.
Would recommend: Yes
Was it helpful to you? Yes | No
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Perfect optic

by Jr, Verified Owner from CA, United States Written on July 1, 2025
The optic is perfect for conceal carry. Small, lightweight. At first I was worried because of how small it was but trying it out just proved me wrong.
Would recommend: Yes
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Great Carry Optic!

by Gabe, Verified Owner from NV, United States Written on June 24, 2025
I’ve had nothing but great experiences with Holosun red dots and the HS507K has been no different. Great looking reticle with 3 different reticles to choose from. Very compact and lightweight while still maintaining a decent window. Great battery life with a side loading battery tray. 10/10 would recommend!
Best Used for:
  • carry
Would recommend: Yes
Was it helpful to you? Yes | No
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Great as always

by John, Verified Owner from GA, United States Written on June 19, 2025
Love holosun. Great as always, crisp lines, easy to zero and install
Would recommend: Yes
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Holosun HS507K Compact Pistol

by Sungwook Yang, Verified Owner from CT, United States Written on June 16, 2025
The reticle is awesome but the glass is way OFF! It magnifies quite a lot, which is very disturbing.
Pros:
  • Great ACSS reticle
Cons:
  • Glass magnification is very bad
Best Used for:
  • CCW
Would recommend: No
Was it helpful to you? Yes | No
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