Holosun HS507K X2 Open Reflex Sight (Green Circle-Dot Reticle)

BH #HOHE507KGRX2 • MFR #HE507K-GR X2
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Holosun HS507K X2 Open Reflex Sight (Green Circle-Dot Reticle)
Key Features
  • For Subcompact Pistols
  • Compatible with Most Factory Iron Sights
  • Green Super LED Circle-Dot Reticle
  • 2 MOA Dot, 32 MOA Circle
Designed for subcompact pistol applications, this HS507K Open Reflex Sight from Holosun features a green, circle-dot reticle and a multicoated lens for clear and unobstructed targeting and close and long ranges. The housing and finish are made from 7075 T6 aluminum and the sight is compatible with most factory iron sights. Directly compatible with the Sig Sauer P365X and P365XL, the Holosun K footprint requires an adapter plate for slides with a four-boss interface. The multiple reticle system has three options: a 2 MOA dot, a 32 MOA circle, and a combined reticle. The sight's green Super LED is powered by a 1632 battery, providing ten daylight brightness levels and two night vision settings, and delivering 50,000 hours of battery life.
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Holosun HE507K-GR X2 Overview

Designed for subcompact pistol applications, this HS507K Open Reflex Sight from Holosun features a green, circle-dot reticle and a multicoated lens for clear and unobstructed targeting and close and long ranges. The housing and finish are made from 7075 T6 aluminum and the sight is compatible with most factory iron sights. Directly compatible with the Sig Sauer P365X and P365XL, the Holosun K footprint requires an adapter plate for slides with a four-boss interface. The multiple reticle system has three options: a 2 MOA dot, a 32 MOA circle, and a combined reticle. The sight's green Super LED is powered by a 1632 battery, providing ten daylight brightness levels and two night vision settings, and delivering 50,000 hours of battery life.

Optical Performance
  • 1x magnification is ideal for close-quarters engagement
  • Unlimited eye relief when using both-eyes-open shooting techniques allows for complete situational awareness
  • Multiple layers of antireflective coating on all optics ensure bright and clear views through the sight window
Reticle Details
  • Multi-Reticle System features three reticle options in circle/dot configuration
  • 32 MOA ring for longer distance targets
  • 2 aiming dot for close-range shooting
  • 12 brightness settings, including two suitable for night vision gear
  • Shake Awake technology with last setting recall
Use and Handling
  • 1 MOA adjustment per click impact point correction
  • +/- 30 MOA windage and elevation adjustments
  • Lock Mode prevents inadvertent setting changes
Construction Details
  • Durable matte black 7075 T6 aluminum housing
  • IP67-rated shock, fog, and waterproof
  • Runs on one included CR1632 battery
UPC: 810047071389

Holosun HE507K-GR X2 Specs

Key Specs
Reticle
2 MOA Dot
32 MOA Circle-Dot
Reticle Color
Green
Power Source
1 x CR1632
Runtime
50,000 Hours
Magnification
1x
General
Reticle
2 MOA Dot
32 MOA Circle-Dot
Reticle Color
Green
Eye Relief
Unlimited
Power Source
1 x CR1632
Runtime
50,000 Hours
Sight Window Dimensions
0.6 x 0.8" / 14.7 x 19.6 mm
Optics
Magnification
1x
Anti-Reflective Coatings
,
Impact Point Correction
60 MOA (Windage & Elevation)
Adjustment per Click: 1 MOA
Physical
Environmental Resistance
Water-Resistant (IPX8)
Operating Conditions
-22 to 140°F / -30 to 60°C
Storage Conditions
-40 to 158°F / -40 to 70°C
Materials
Aluminum
Dimensions
L: 1.6 x W: 1.0 x H: 1.1" / L: 40.6 x W: 24.9 x H: 29.1 mm (Sight)
Weight
1 oz / 28 g (Sight)
Packaging Info
Package Weight
0.425 lb
Box Dimensions (LxWxH)
5.7 x 4.2 x 2.3"

Holosun HE507K-GR X2 Reviews

Good Buy!

By Gary
Rated 4 out of 5
Date: 2026-01-14

Overall it seems to be of good quality. Personally I don't find the MRS to be of much value and I prefer just the dot. It does come with mounting screws but they are too short. I installed this on a Bul Armory Ultralight and I had to get longer screws. With the mounting plate there are only about 2 threads engagement using the M4x8mm supplied screws. M4x10 with some blue locktite is what I used.

See any errors on this page?

What mounting screws are included? Does it come ...

What mounting screws are included? Does it come with (2) #6-32 x 1/2" Torx screws?
Asked by: William
Yes, the Holosun HS507K X2 Open Reflex Sight (Green Circle-Dot Reticle) comes with 2 mounting screws.
Answered by: Elliot A
Date published: 2025-08-06

How do I make the outer oracle ring smaller and ...

How do I make the outer oracle ring smaller and closer to the center dot?
Asked by: Richard
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