The Holosun HS507K X2 is a 1x open-reflex pistol red dot sight on the Holosun K footprint, which is the RMSc pattern, running the red Multi-Reticle System.
This is the full 507-series reticle set shrunk onto a housing narrow enough for a slimline slide, so a subcompact no longer has to settle for a plain dot.
The reticle switches between a 2 MOA dot, a 32 MOA circle and both together, seen through a 0.58 x 0.77 in (14.7 x 19.6 mm) window. The body is 7075-T6 aluminium at 1.6 x 0.98 x 0.95 in and 1 oz, rated IP67 and tested to 5000G, and the sight is parallax-free with unlimited eye relief.
Power is a side-loading CR1632 rated up to 50,000 hours that can be changed without breaking zero, with Shake Awake waking the reticle on movement and X2 lock mode freezing the settings once you are happy with them. Illumination covers 10 daylight settings and 2 night-vision levels, and the turrets move 1 MOA per click with 30 MOA either side of centre. One thing this model does not have is solar backup, which is fitted to the larger C-series bodies instead.
Why shooters choose the HS507K X2
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Reticle — red Multi-Reticle System: 2 MOA dot, 32 MOA circle or circle-dot
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Footprint — Holosun K, the RMSc pattern used by slimline optics cuts
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Window — 0.58 x 0.77 in (14.7 x 19.6 mm)
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Illumination — 10 daylight settings and 2 night-vision levels
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Power — side-loading CR1632 rated up to 50,000 hours, with Shake Awake
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Controls — X2 lock mode holds the brightness and reticle choice
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Build — 7075-T6 aluminium, IP67 and 5000G rated, 1 oz
What the HS507K X2 fits
Slides cut to the RMSc pattern, and RMSc-pattern adapter plates, take it directly; RMR-cut slides do not. For a fixed chevron and ring instead of the switchable reticle set, the HS507K X2 ACSS Vulcan is the alternative, and on a full-size slide the HS507C X3 carries the same reticle set with solar backup.
Specifications
| Optic Type |
Open reflex pistol red dot sight, 1x, parallax-free |
| Reticle |
Multi-Reticle System: 2 MOA dot / 32 MOA circle / circle-dot, red |
| Window Size |
0.58 x 0.77 in (14.7 x 19.6 mm) |
| Footprint |
Holosun K (RMSc pattern) |
| Illumination |
10 daylight / 2 night-vision settings |
| Click Value |
1 MOA per click |
| Adjustment Range |
30 MOA either side of centre |
| Battery |
CR1632 in a side-loading tray, up to 50,000 hours |
| Power Management |
Shake Awake, X2 lock mode |
| Housing |
7075-T6 aluminium |
| Durability |
IP67, 5000G shock rating |
| Dimensions |
1.6 x 0.98 x 0.95 in |
| Weight |
1 oz |
| MPN |
HS507K-X2 |
A circle when you need speed, a 2 MOA dot when you need precision, on a slimline slide. Order the HS507K X2 today — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.
Explore more: RMSc Footprint Red Dot Sights, Holosun HS507K X2 ACSS Vulcan or browse all Holosun.
