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Questions & Answers
Will this fit on the M&P 5.7 ? Expert Answer

The Holosun HS507K Compact Pistol Red Dot Sight will mount directly to the optic ready slide of the M&P 5.7 without the need for an adapter plate.

by Ethan, Gear Expert, March 6, 2023
Is it suitable for a Glock 40 MOS 10mm Auto? Thanks Expert Answer

To mount the Holosun HS507K Compact Pistol Red Dot Sight to your Glock 40 MOS, you will need to use the C&H Precision Weapons V4 MIL/LEO Adapter Plate (linked below). Keep in mind that this optic was designed for micro pistols, while your Glock 40 can accept optics with full sized footprints such as the RMR, Deltapoint Pro, Docter, and C-More footprints.
https://www.opticsplanet.com/c-h-precision-weapons-v4-mil-leo-adapter-plate.html?_iv_optic-cut=holosun-507k&_iv_gun-model=glock-17-mos

by Ethan, Gear Expert, October 7, 2024
Customer Reviews
Helpful Positive Review HS507k x2 ACSS = rambo mode by BobDolesGhost, April 21, 2023
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,...
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13/13 found this helpful
Helpful Positive Review Nice sight but not RMS-C footprint by Bonbonjon, Verified Owner, August 2, 2023
NOT RMS-C FOOTPRINT. After receiving it and finding it to not fit, a quick web search shows Holosun is calling this a "modified RMS-C" footprint. Bought for my 43x MOS. Assume it will not fit any Glock MOS without adapter plate or modification. I ...
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1/1 found this helpful
Helpful Positive Review Holosun 507k by Mike, Verified Owner, February 8, 2024
Best optic I’ve used. Great for everyday carry and fits great on a g43x.
1/1 found this helpful
Helpful Positive Review Finally a 507k that makes sense to buy. by Sig Powers, Verified Owner, August 3, 2023
I purchased a 407k with 6moa dot a couple of years ago. It made alot more sense than the 507's 32 moa circle to me. This however, changes things. The circle is only visible when you are off target. Instead of a distracting ring around my dot, I now h...
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3/3 found this helpful
Helpful Positive Review ACSS Vulcan by Benjo, Verified Owner, April 3, 2025
Best red dot in the market for micro pistols. The reticle makes it easy to find the dot.
1/1 found this helpful
Helpful Positive Review clear glass, bright reticle, fast target acquisition by Hrpman, Verified Owner, March 4, 2025
I bought this Holosun for one of my wife's target pistols and after getting it mounted and zeroed i think i might upgrade a couple of my other Holsuns to the acss reticle, i have astigmatism in both eyes and dont have any problems with the crispness ...
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2/2 found this helpful
Read All 74 Reviews
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Product Info for Holosun HS507K Compact Pistol 2x 0.58 x 0.77 in Reflex Red Dot Sight

Made as a collaboration between Holosun Optics and Primary Arms Optics, the illuminated HE507K with ACSS Vulcan Dot Reticle brings the revolutionary Vulcan aiming system to a micro reflex footprint.image

Designed for concealed carry, the HE507K is lightweight, durable, and dependable, with up to a 40,000-hour runtime on medium settings. This sight retains all the core features and technologies of the standard Holosun model, including the Multi-Reticle System, Shake Awake technology, and a built-in Lock Mode. With 12 illuminated brightness settings and intuitive push-button controls, the HE507K works in any lighting condition and is even compatible with night vision devices.

This co-branded optic features the ACSS Vulcan Dot reticle system, which improves acquisition and recovery speed through its patented outer reference circle. When aimed on-target, the ACSS Vulcan Dot reticle appears as a simple, unobtrusive 3 MOA dot. When your aim is off-target, the edge of the 230 MOA outer circle guides you back to center. ACSS Vulcan Dot alleviates one of the main weaknesses of micro reflex optics, ensuring you can always find your reticle aiming point, despite the smaller optical aperture.

The HE507K with ACSS Vulcan Dot Reticle features an RMSc footprint and is natively compatible with many of the most popular concealed carry pistols.

WARNING: California`s Proposition 65

Specifications for Holosun HS507K Compact Pistol 2x 0.58 x 0.77 in Reflex Red Dot Sight:

Manufacturer: Holosun
Color: Black
Fabric/Material: 7075-T6 Aluminum
Magnification: 1 x
Objective Lens Diameter: 0.58 - 0.77 in
Objective Window Size: 0.58x0.77 in
Illumination Type: LED
Illumination Color: Red
Eye Relief: Unlimited
Adjustment Type: MOA
Adjustment Click Value: 1 MOA
Optical Coating: Multicoated
Battery Type: CR1632
Battery Quantity: 1
Battery Life: 50,000 hours
Water Resistance Level: IP67
Weight: 1 oz
Condition: New
Magnification Type: Fixed
Quantity: 1
Red Dot Sights-Footprint: RMS

Features of Holosun HS507K Compact Pistol 2x 0.58 x 0.77 in Reflex Red Dot Sight:

  • Ultra-compact size for concealed carry applications
  • Two Reticle Settings: Dot + Circle, and Dot only
  • Shake Awake - Motion on with last setting recall
  • Parallax-free, unlimited eye relief
  • 10 daylight and 2 night vision compatible brightness settings
  • IP67 Certified

Package Contents:

  • Holosun HS507K Compact Pistol 2x 0.58 x 0.77 in Reflex Red Dot Sight

Holosun HS507K Compact Pistol 2x 0.58 x 0.77 in Reflex Red Dot Sight Orderable Models

List of Orderable Models

Holosun Sub-compact HS507K-X2 Dot Red Dot Sight, 1x, 2 MOA, Black, HS507K-X2 , MPN: HS507K X2 , UPC: 810047071211 , Code: 28Y-RD-SG55-HS507K-X2
Holosun HS507K Compact Pistol Reflex Red Dot Sight, 2x 0.58 x 0.77 in, MOA Red ACSS Vulcan Reticle, Black, HS507K-X2-ACSS , MPN: HS507K-X2-ACSS , UPC: 810047072393 , Code: 28Y-RD-SG55-HS507K-X2-ACSS

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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