The Holosun HS407K-X2 is a 1x open reflex pistol sight with a single 6 MOA red dot, built on the Holosun K footprint, which is the RMSc pattern.
No circle, no switchable modes, no solar panel. One large red dot on the smallest common slide cut, and everything else stripped out of the way.
The body is 7075 T6 aluminium measuring 1.6 x 0.98 x 0.95 in and weighing 1 oz, rated IP67 against dust and water and tested to 5000G, with a window of 0.58 x 0.77 in. A CR1632 loads from a tray in the side, rated for up to 50,000 hours, so a cell change never means unbolting the sight and re-zeroing it. Windage and elevation move 1 MOA per click with 30 MOA of travel each way, and twelve brightness settings split ten daylight and two night-vision compatible.
The X2 generation adds a lock mode that stops the brightness being nudged in a holster or a bag, and Shake Awake, which puts the reticle to sleep after the pistol has sat still and relights it the instant it moves. A 6 MOA dot is the coarse option: quicker for the eye to find at close range on a small pistol, but covering more of a distant target than a 2 MOA dot would. Note that there is no solar cell on the K series, so the CR1632 and Shake Awake are doing all of the work.
Why shooters choose the HS407K X2
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Reticle — single 6 MOA red dot, no circle
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Footprint — Holosun K, which is the RMSc pattern
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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 against accidental brightness changes
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Adjustment — 1 MOA per click with 30 MOA of travel each way
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Illumination — 12 settings — 10 daylight and 2 night-vision compatible
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Build — 7075 T6 aluminium, IP67 and 5000G rated, 1 oz
What the HS407K X2 fits
It mounts directly on hosts cut to the Holosun K or RMSc pattern, and on adapter plates machined to that pattern; an RMR cut needs a dedicated plate or a different optic. Switchable reticles on a similar body come with the HS507K X2 ACSS Vulcan, a full-size RMR-footprint alternative with Solar Failsafe is the HS407C X2, and more of the pattern sits in RMSc Footprint Red Dot Sights.
Specifications
| Optic type |
Open reflex red dot sight, 1x |
| Reticle |
6 MOA red dot |
| Window size |
0.58 x 0.77 in |
| Footprint |
Holosun K (RMSc pattern) |
| Illumination |
12 settings — 10 daylight / 2 night vision |
| Battery |
CR1632 in a side-loading tray, up to 50,000 hours |
| Power management |
Shake Awake and X2 lock mode |
| Solar |
Not fitted to this model |
| Adjustment |
1 MOA per click, 30 MOA each way |
| Housing |
7075 T6 aluminium |
| Dimensions |
1.6 x 0.98 x 0.95 in |
| Weight |
1 oz |
| Ratings |
IP67 water and dust resistance, 5000G shock |
| MPN |
HS407K-X2 |
The simplest thing Holosun make in this size, which on a small pistol is usually the right answer. Order the HS407K 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, HS407COMP 6 MOA Red Dot or browse all Holosun.
