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// 29.9.2023 GA4 add to cart // 29.9.2023 GA4 add to cart

Holosun 507K X2

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Holosun 507K X2 Details

About the Holosun 507K X2

Holosun 507K X2 is a red dot sight from the Reflex series.

The letter 'K' indicates the red dot sight's unique, miniature shape which makes it ideal for pistol use. It has a modification of the Shield RMS footprint instead of the Trijicon RMR footprint found on 407C507C, and 508T.

There are two large buttons for illumination control on the side of the Holosun moa red dot.

The 507K reflex red dot features the Holosun ShakeAwake function. When left powered on, the device will go from 'active mode' to 'sleep mode' after a while to prevent unnecessary battery drain. Once moved, it will power back on immediately.

Holosun 507K X2 red dot is the second generation from the 507K series of red dot sights. Not many differences can be found between the first and second generations.

Holosun added the button models lock mode and made the illumination control buttons smaller. The buttons on the Holosun ‘X2’ reflex optical sight are also placed horizontally, whereas they were placed vertically on the first dot sight model.

Main features of Holosun "507K" micro red dot

  • red and green illumination

  • made of 7075-T aluminum

  • 2 MOA dot & 2 MOA dot surrounded by a 32 MOA circle & circle only

  • incredibly compact and lightweight open reflex sight

  • 507K red dot sight is perfect for a pistol (pistol sized holosun)

  • ShakeAwake function with the last setting recall

  • 12 illumination intensity levels – 2 of them are NV compatible

  • pistol red dot is Parallax free

  • dot sight with 50.000 hours battery life

  • the battery compartment is at the side of the Holosun's 507k reflex red dot

  • uses a modification of the footprint/mounting standard found on Shield RMS and SMS sights

  • the rear part of the Holosun 507K red dot sight acts as a rear sight when mounted on a pistol

About the Holosun Reflex series

Reflex is one of the red dot sight series made by Holosun. These compact sights are not closed on both sides like the Holosun Tube, Holosun Infiniti and Holosun Paralow series, which is why they are very compact and lightweight (there are some exceptions to this in the Holosun Reflex series – 512T is closed from both sides and thus bigger while 510C is a reflex-type red dot sight of a bigger design).

Holosun 407K dot sight and Holosun 507K dot sight are designed specifically for pistol use – these red dot sights are even more compact than Holosun 407C, Holosun 507C, and Holosun 508T models. Holosun 407K red dot sight and Holosun 507K red dot sight are the first Holosun red dot sights that are equipped with a central dot size of 6 MOA.

The illumination is powered by a CR1632 battery. The click value for the elevation and windage adjustments is 0.5 MOA. These durable red dot sights feature a single-piece housing made out of 7075-T aluminum. Altogether, there are 12 illumination intensity levels to choose from, 2 of which are NVD compatible. The battery life is 50.000 hours.

About the Holosun "507K" family

Holosun 507k dot sight is one of the model families in the Reflex series. The first number '5' in its name means that the user can switch between a 2 MOA dot; a 2 MOA dot surrounded by a 32 MOA circle or a 32 MOA ring only.

Mounting details of 507K red dot sight

Holosun 507K dot sight has a modification of the Shield RMS footprint for mounting purposes. Ifyou are interested in footprints on red dot sights, read our article Footprints/Mounting Standards on Red Dot Sights

Warranty on Holosun red dot sights

The Holosun warranty is 3 years on the material and on the electronics of the red dot sight.

For more information regarding Holosun's red dot sight labels, check our blog post.

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Holosun 507K X2 Specifications

Dot sight seriesHolosun Reflex
Made inChina
In production since2020
Warranty3 years
Click Value 28mm/100m - 1MOA
Windage - mrad. 8.73mrad
Windage - MOA.30MOA
Reticle2 MOA Dot & 32 MOA Circle
Reticle position No
Reticle illumination Yes
Usable at daytime Yes
Automatic Turn Off Yes
Size of Dot.2MOA
Adju. intensityYes, manual
Intensity controlPush Button
Parallax setting Free of Parallax
Length.41 mm
Width.25 mm
Height.24 mm
Working temperature range-20°C / +51°C
Power Supply UnitCR1632
Battery lifespan.50000h
Filled with -
Lens coatings Multicoated
Mounting StandardHolosun 407K/507K
Mount type - IntegratedNone
Mount length.0mm
Size of window14x19 mm
Dot Sight TypeReflex sight
Water proof Yes
Fogproof Yes
Shock proofYes
Type of mount rail No


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Reviews & Testimonials

Reviews for Holosun 507K X2

3 reviews
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All Perfect, but the screws... By
Wonderful little thing as accurate as its big brother ( HS 507 C ) but tinyer !
Mounted on my Glock 35 MOS Gen4, it makes its job perfectly...

Just one (big) problem: i used Blue Loctite but the Holosun torx tool chewed the
provided screws. Don't lock it and don't overscrew the torx or you will have
to use a Dremel driller, like i did, to get your Red Dot back !!!

One mistake from optics-trade review:

You DON'T have to modify your Glock MOS mounting plate if you use a SHIELD Low-Profile for Glock MOS: it fits perfectly...

No modification at all

Knowing all this, will buy it again from optics-trade.eu for the ultra-fast shipping to France and the very low price.

(Posted on 21/03/2021)

Absolutely Superb Quality, Function and Sevice By
Bought this Holoson HS 507K for my Sig 365 XL and it is a marraige made in Heaven. Simple to install and side access to the battery is smart. Illumination and sighting adjustments are clear and clean. Picking up the sight picture is smooth and quick. Love, love, love this upgrade to an already amazing gun. Optics-trade provided fast and coirteous service. They were exceptionally responsive to my communications and always leaning forward to be most helpful. I will definately buy for them again.

(Posted on 25/09/2020)

Reasonably price considering the scarcity of this optic. And it shipped reasonably quickly. However I am very disappointed that it did not ship with a battery.

(Posted on 11/09/2020)

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