Holosun SCS MOS in detail

Holosun red dots are very popular amongo shooters. Recently Holosun came with a SCS MOS model that is made specifically for Glock MOS models: Glock 17 MOS, Glock 19 MOS, Glock 26 MOS and other. In this article we will look in detail into this red dot. It is not review as such, instead we put all valuable information about the red dot so that you yourself can make the decision.

Mounting compatibility

Compatibility of red dots is solve by a footprint.

What does footprint stand for? Well as any other footprint, in this case also footprint tells us what does the bottom of the red dot look like.

With that information we will understand what kind of mounting device we have to use in order to fit the red dot. I.e. what is the positoin of the pins and screw holes of the red dot so that we can mount it.

Why is it important? It is one thing to get the best red dot, but it can be another thing to be able to mount the red dot to the gun you want. Luckily, most of the manufacturers share 4 or 5 main types of footprints to accomodate its red dots.

Holosun SCS MOS footprint

Holosun SCS MOS has a footprint designed to fit the factory footprint from Glock MOS models. The advantage of this solution is lower position of the red dot in the slide of the gun. In other words, this red dot is designed to fit only the Glock MOS models (Glock 17 MOS, Glock 19 MOS and other) without anyplate or mount inbetween. It will straight on the slide.


Holosun SCS MOS is compact sized red dot. The body of the red dot is slightly longer compared to other Holosun red dots (1.93 in vs 1.6 in). Yet the weight is similar to Holosun EPS or Holosun 507C X2.

The red dot is however less wide than these red dots (0.15 in thinner actually) and slightly less high as well (0.2 in smaller).

The dimensions of the red dot are following:

Length: 49mm / 1.93 in
Width: 26mm / 1.01 in
Height: 23mm / 0.91 in
Weight: 37g / 1.3 oz

The dimensions of the red dot window are similar to K-series red dots. That is 0.77 in wide and 0.58 inch high.

Width: 20mm / 0.77 in
Height: 15mm / 0.58 in


You can download the Holosun SCS MOS guide.

Frequently asked questions

You may be looking for answers to one of these questions. For each find the answer below.

What footprint is the Holosun SCS MOS?

Holosun SCS MOS uses unique footprint designed to fit Glock MOS without any mounting plate.

How to turn on Holosun SCS MOS?

Press and release either the “+” or “-” button in order to turn the red dot on.

How to turn off Holosun SCS MOS?

Press the “+” and “-” button at the same time in order to turn the red dot off.

How to change reticle on Holosun SCS MOS?

Press and hold the “-” button for 3 seconds in order to change the reticle.

How to adjust Holosun SCS MOS?

To adjust height you have to use the elevation screw on top of the tail of the red dot.

To adjust side you have to use the windage screw on the right side of the housing of the red dot.

How to change battery in Holosun SCS MOS?

The battery of Holosun SCS MOS is internal and not removable. You can only recharge it.

Technical data

Reticle 2 MOA Dot & 32 MOA Circle
Light Wavelength 540nm
Reticle Color Green
Parallax Free Yes
Unlimited Eye Relief Yes
Magnification 1x
Multi-Coatings Yes
Power Source Solar & Battery
Battery Type Internal rechargeable battery
Battery Life (Hours) Unlimited
Brightness Setting Auto
Window Size 0.58×0.77
Dimension (in) 1.93×1.03×0.91
Weight (oz) 1.3
Housing Material Titanium
Surface Finish Titanium
Adjustment per Click 1 MOA
W&E Travel Range ±30 MOA
Storage Temperature -40℃~70℃
Working Temperature -30℃~60℃
Submersion IP68
Vibration 5000G


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