Hey Freedom Gorillas, today we’re taking a look at the Holosun SCS MOS. This is a direct mount optic that will fit directly on Glock MOS Double Stack models like the Glock 19 and Glock 45, it’s a great choice if you are looking for something compact and matching the factory look of your Glock.
It can be tough to decide when you don’t have the optic itself to play with, but this review will give you enough information so you can decide if this red dot sight is the right optic for you
The Holosun SCS MOS is available in green dot only and is $349.99

Buy the Holosun SCS MOS At The Best Price
TLDR
The Holosun SCS MOS is an open emitter green dot sight that directly mounts to any Glock MOS Double Stack Model. It has a 20k hour battery reserve and uses Holosun’s solar recharging technology. It uses a green dot reticle that is designed to cowitness so you can still use your factory Glock iron sights as a backup.
The sight has the Holosun MRS reticle, a 32 MOA outer ring and 2 MOA center dot and is made out of grade 5 titanium. It has an auto brightness mode with advanced downrange sensors that adjust brightness based on what you see downrange. A button on the side also allows you to increase the brightness for 30 minutes. The Holosun SCS MOS has a grade 5 titanium housing and is IP68 waterproof. You can explore all options in our Holosun SCS series collection.
Stats and dimensions on the Holosun SCS MOS:

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Holosun SCS MOS Reticles

The reticle for the SCS MOS comes in green only. It uses a MRS reticle that is a 2 MOA center dot surrounded by a 32 MOA ring. It can be adjusted by holding down the side button to show only the 32 MOA ring, only the 2 MOA dot, or the 2 MOA dot and 32 MOA ring together.
This reticle is great for those who enjoy some flexibility but want something simple, since the 2 MOA center dot allows for precision while the 32 MOA outer ring helps you “find the dot.”
Holosun SCS MOS Pricing & Models
There is only one model of the SCS MOS and it only comes with a green reticle. The price on Freedom Gorilla is $349.99 There are also other SCS Models which vary in footprints but utilize the same tech that can be found on our website.
Holosun SCS MOS Dimensions & Size
- Length: 1.93”
- Width: 1.01”
- Height: 0.91”
- Deck Height: Very Low
- Weight: 1.3 oz
- Window Size: 0.58”H x 0.77”W
Holosun SCS MOS Footprint
The Holosun SCS MOS is a Glock MOS footprint, meaning it will fit most Glock MOS models (except G43X MOS and G48 MOS) without the need for an adapter plate.
What Models Holosun SCS MOS Fits

Holosun SCS MOS FITS
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Holosun SCS MOS FITS
Holosun SCS MOS Will NOT FIT:
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Holosun SCS MOS Intended Use
The Holosun SCS MOS is intended for Glock MOS Double Stack Models only and is directly mounted to the weapon, meaning you don’t require an adapter plate. This is a great optic for concealed carry since it is light, compact, and is always on, providing a clear sight picture. Its durability makes it applicable for law enforcement and duty use as well as home defense.
The Holosun SCS MOS is intended to fit double stack Glock MOS models seamlessly, appearing as a factory optic with serrations that match with the Glock slide. It is perfect for those who want a “set it and forget it” optic.
In the Holosun SCS MOS Box
This is what you’ll find in the box when you open the Holosun SCS MOS:
- SCS MOS Optic
- Custom Screws
- Lens Cloth
- Multi Tool
- Manual
- Warranty Card
Holosun SCS MOS Review & Highlights
The Holosun SCS MOS is the first of its kind for Glock MOS models. The direct mount allows for a low deck height to make it a co witness Glock sight. This allows you to still reliably use your built in iron sights with the optic attached. It also means there is no need for adapter plates and the optic has no overhang on the sides, sitting flush with the slide.
The SCS MOS uses solar recharging technology that charges by both ambient and direct sunlight. This ensures constant charging while in use with one day at the range charging it fully. It has 20k hours of battery in reserves, so it will last for 20k hours, about 2 years, without contact with any light at all such as locked in a gun safe.
The brightness is automatic, and the SCS MOS uses advanced downrange sensors that adjust the brightness based on what you see downrange; if you are in a dark room but are looking at a bright outside, it will adjust accordingly.
The brightness can also be increased with the help of a button on the side of the reticle. This overrides the default brightness for up to 30 minutes. That same button can also allow you to adjust the reticle which has a 2 MOA center dot and a 32 MOA outer ring. It can be adjusted so that you see only the center dot, only the outer ring, or both together.
It is a durable optic and is the only SCS model to have a housing made of grade 5 titanium. Most optics are only made with 7075 T6 Aluminum, so this model stands out as one of the most durable on the market.
The SCS MOS also has a waterproof rating of IP68 which means it is protected from dust, sand, and other solid particles and can withstand water submersion deeper than one meter without damage. This makes it great for outdoor ranges and rainy weather.
The Holosun SCS MOS is a great choice for any Glock MOS owner since it’s designed to mount directly to the body, matching the serrations on your Glock and appearing factory.
We recommend this optic for its quality and durability, but also for its simplicity. For those who want a set it and forget it optic that is ready to go, allows you to cowitness your built in iron sights, and is low profile, this is the one. It’s easy to use and is perfect for multiple applications including home defense, concealed carry, and competition or training.
Buy the Holosun SCS MOS At The Best Price
Holosun SCS MOS Downsides
Due to its streamlined design, the Holosun SCS MOS lacks some features. The SCS MOS doesn’t have a removable battery, which may be offputting for some, but this isn’t a problem since Holosun’s solar technology ensures it’s constantly charging.
Another feature it doesn’t have is manual brightness control, which may be important for those who want full control of their brightness. But we find that the automatic brightness does the trick, and the ability to increase the brightness for 30 minutes is perfect.
The Holosun SCS MOS also doesn’t have a shake awake feature, but there is no need since it’s intended to be on at all times.
The “downsides” to us are minimal when it comes to the SCS MOS since it’s easy to use, directly mounts, and is flexible for all uses. The simplicity makes it a go-to for many Glock users and since it’s designed specifically for the Glock, you know that it is built to enhance and improve your experience with the model.
Holosun SCS MOS Warranty
The Holosun SCS MOS has a lifetime warranty that applies specifically to the housing structure. If the housing is damaged in any way, Holosun will, at their option, replace or repair the item. The LED illumination system is under warranty for 10 years from the manufacture date.
These warranties are null and void if you have performed any modifications on the unit, and it doesn’t include general wear and tear from repeated use.
If you have any issue within 30 days of purchasing the Holosun SCS MOS from Freedom Gorilla, we will replace the optic free of charge.
Conclusion
Hopefully, you have found this guide helpful so far and have a better understanding if the SCS MOS is right for you.
With the SCS MOS, you won’t have to worry about charging or replacing the battery, and the auto brightness means you won’t have to adjust it when jumping between different places.
The direct mount makes it easy to attach and it also allows for co witness sights, so you can still easily use your built in Glock iron sights, you can use your backup sights through the reticle. This optic is perfect for those who want very little hassle and something reliable for consistent shooting.
If you have any questions, please contact us and we would be happy to help.
Thanks for reading!