When you are looking for a durable, high-performance red dot sight that can mount smoothly to an RMR-cut slide, then Holosun should have some of the best products on the market.
Regardless of whether it is outfitting a concealed carry pistol, duty weapon, or competitive firearm, Holosun red dots are tough, state-of-the-art, and still economical, making them popular among law enforcement, shooting sports competitors, and armed citizens alike.
In this guide, we will discuss the best-rated Holosun RMR footprint red dots, as well as those that have adapters to fit the RMR footprint.
Whether your favorite open-emitter optics are the 507C or 509T, or take the ones with enclosed housings, such as the 509T and EPS, we will go over the major specifications, highlight both the positive and negative aspects of these optics, and discuss what each optic is best at. Let us get the ideal Holosun red dot that fits your slide and shooting habit.
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| 1)Holosun 507C X2 |  |
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| 2) Holosun 507C X2 (ACSS Vulcan reticle) |  |
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| 3) Holosun 507 COMP |  |
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| 4) Holosun 508T |  |
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| 5) Holosun 509T X2 |  |
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| 6) Holosun 407C X2 |  |
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| 7) Holosun EPS (Full‑size) |  |
What is the RMR Footprint and Why Does It Matter?
The optic footprint is the most important compatibility factor when purchasing red dot sights. This is because the optic is mounted using a pattern of screw holes and recoil lugs that fit securely on your firearm slide or optic adapter plate. The RMR footprint is one of the most popular and well-supported footprints, originally designed in Trijicon RMR (Ruggedized Miniature Reflex) optic.
RMR footprint has been accepted as an industry standard, particularly with pistol red dot sights. It is extraordinarily flexible with many optic-ready and aftermarket handguns initially custom milled to accommodate RMR-style optics.
Why RMR Compatibility Is Important
- Better Mounting Support: The RMR footprint has so many slides and adapters made that selecting an RMR-compatible red dot (such as many of the Holosun models) will provide you with maximum mounting support.
- Future-Proofing: If you ever change pistols or slide-units, you may remain in the RMR ecosystem and avoid remounting or re-purchasing adapters.
- Availability: There is already a massive selection of RMR plates, spacers, suppressor-height sights, and backup irons available aftermarket.
Why Choose a Holosun Red Dot?
Holosun has also gained a reputation as one of the most feature-rich and innovative brands of optics in the firearms marketplace with an abysmal level of durability and impressive performance that could easily rival the top brands, yet at half the price. However, the real strength of Holosun is its innovative technology and universal designs, and high value throughout its extensive scope of red dot optics.
The following are the key technologies that make Holosun unique:
Key Technologies of Holosun explained.
- Shake Awake
The optic of Holosun switches off after idling for a specific amount of time in order to preserve battery life; this is achieved through motion-activated design. Whenever someone moves, the dot immediately returns to the point of being operational so that when you pull out your weapon, you are ready.
- Solar Failsafe
The majority of Holosun red dots come with a solar panel on the top, automatically adjusting brightness with the capability of powering the optic without a battery in bright light conditions. It will serve as an alternate form of power; it will ensure that the sight continues working when your battery goes kaput.
- Multi-Reticle System (MRS)
Available as models such as the 507C, 508T, and 509T, MRS allows you to switch between:
- 2 MOA dot
- 32 MOA circle
- Circle-dot combination
Holosun vs. Trijicon, Vortex & SIG
| Feature | Holosun | Trijicon RMR | Vortex Venom/Viper | SIG Romeo1/2 |
| Reticle Options | Dot, circle-dot MRS | 3.25 or 6.5 MOA dot |
Dot only |
Dot or Circle-Dot |
| Solar Power | Yes | No | No | No |
| Shake Awake | Yes | No (always on) | No | Some models |
| Battery Life | 50,000 hrs | 4 years | 150 hours | 20,000 hr |
| Price Range | ($250–$450) | ($500–$750) | ($200–$250) | ($250–$350) |
| Housing Material | 7075 Al / Titanium | Forged Aluminum | Aluminum | Magnesium/Polymer Mix |
Holosun Red Dot with RMR Footprint
1)Holosun 507C X2
Holosun 507C X2 is one of the trendiest red dot sights with RMR footprint that fits pistols, rifles, and shotguns perfectly.
What makes this particular optic unique is that it offers a very affordable option that has not only versatility, but also durability and a price tag that is less than $330.
Features the Holosun Multi-Reticle System (MRS), which enables the shooter to switch between use of a 2 MOA dot, 32 MOA circle, and both of them at the same time with use of the same LED emitter. It is highly adaptable, thus ideal either in controlled shooting or quick targeting.
The 7075-T6 aluminum is used in the housing as it remains lightweight but strong. It has Shake Awake technology that will help hold the battery life, and Solar Failsafe that will automatically allow the brightness to change with the different lights.
Also features a remarkable 50,000-hour battery life supplied by a CR1632 coin cell, which is loaded via the side tray (tool-less changes).
Be it competition, concealed carry, or duty, the Holosun 507C X2 is a high-performing optic with engineering features normally found in much more expensive optics.
Specications
- Reticle: 2 MOA dot, 32 MOA circle, or both
- Housing: 7075-T6 Aluminum
- Brightness: 12 settings (10 daylight, 2 night vision)
- Battery: CR1632, side load, ~50,000 hours
- Solar Failsafe: Yes
- Window Size: 0.91 x 0.63 in
- Footprint: RMR compatible
- Weight: 1.5 oz
- Waterproof: IP67
Pros
- Versatile multi-reticle system
- Long battery life with solar backup
- Side-loading battery (no re-zeroing)
- Rugged and lightweight
Cons
- Open emitter (not ideal in dirty environments)
2) Holosun 507C X2 (ACSS Vulcan reticle)
The Holosun 507C X2 ACSS Vulcan presents the tested and refined 507C platform with one of the most common-sense aiming systems on the market today.
Its reticle is designed to integrate with the vision and position the dot quickly and even upside-down in poor presentation or under stress situations.
As opposed to certain traditional dots or multi-reticle, the ACSS Vulcan has a chevron aiming point (not a dot) with a huge outer ring of 250 MOA.
The off-target circle only makes an appearance when you are targeting, and this directs you to the aiming of the chevron in the absence of guessing. Having been put on target, the ring goes out of sight and only the ultra-sensitive chevron remains.
Has a rugged chassis but also has the identical 7075-T6 aluminum body, solar failsafe, Shake Awake, and 50,000-hour battery life. It has a side-loading CR1632 battery, which does not require re-zeroing in changing batteries. It is RMR footprint, and it fits perfectly on most optics-ready pistols.
Specications
- Reticle: ACSS Vulcan Chevron + 250 MOA outer ring
- Brightness: 12 settings (10 daylight, 2 NV)
- Battery: CR1632, ~50,000 hrs, side load
- Material: 7075-T6 Aluminum
- Footprint: RMR compatible
- Window: 0.91 x 0.63 in
- Weight: 1.5 oz
- Solar Failsafe / Shake Awake: Yes
Pros
- Chevron reticle enables ultra-precise aiming
- Massive outer ring helps find the dot under pressure
- Same rugged features as standard 507C
Cons
- Ring can be distracting for some users at first
3) Holosun 507 COMP
The Holosun 507 COMP was designed to work in competitive shooting, as it provides one of the biggest sight windows in the Holosun family.
It is fast, multi-functional, and extremely accurate in a tough red dot predicament, complete with RMR footprint, meaning it fits most pistol slides and optics-available platforms.
Has an optic with Holosun’s new Competition Reticle System (CRS), featuring a 2 MOA dot with adjustable rings of 8 MOA, 20 MOA, and 32 MOA surrounding the dot. The users are able to cycle through 8 choices of reticle in all to best suit their use and needs.
Made in a 7075-T6 aluminum housing that is long-lasting and comes off as surprisingly lightweight. It also has no solar failsafe, but it still has Shake Awake and a side-load CR1632 battery that can keep the unit functioning at 50,000 hours.
Specications
- Reticle: 2 MOA dot + 8 / 20 / 32 MOA rings (8 total configurations)
- Window Size: 1.1 x 0.87 in
- Material: 7075-T6 Aluminum
- Battery: CR1632, ~50,000 hrs, side tray
- Brightness Settings: 10 daylight, 2 night vision
- Footprint: RMR compatible
- Weight: 1.7 oz
- Shake Awake: Yes
Pros
- Huge window for faster dot acquisition
- Multiple ring reticles for competition flexibility
- Tough aluminum housing with side battery access
Cons
- No solar failsafe or auto-brightness
4) Holosun 508T
When the 507C is the HOT product of the Holosun Company, the 508T is the step, or rather, step plus that comes as the premium upgrade to it, providing everything that the HOT product does with an added rugged titanium housing that is more durable and resistant to corrosion.
Crafted to the needs of shooters that require both competitive success and durability, a 508T is a perfect option as a duty or defensive firearm or even as a competition pistol, particularly during severe conditions.
The 508T, like the 507C, has Holosun Multi-Reticle System (MRS) that enables the user to select between a 2 MOA dot or 32 MOA circle or use both together. This adjustability is perfect both in terms of making precision shots and in gaining close-quarters targets fast.
Its titanium body also adds a little bit of weight to the 508T compared to those made of aluminum, though that is a small price to pay as the result is an optic that can take much more abuse and more effectively stand the elements.
Also has a Solar Failsafe, Shake Awake, and a side-loading CR1632 battery tray that supports 50,000 hours of run time.
Specications
- Reticle: 2 MOA dot, 32 MOA circle, or both
- Housing: Grade 5 Titanium
- Brightness: 12 settings (10 daylight, 2 NV)
- Battery: CR1632, ~50,000 hrs, side load
- Solar Failsafe / Shake Awake: Yes
- Window Size: 0.91 x 0.63 in
- Footprint: RMR compatible
- Waterproof: IP67
- Weight: 1.8 oz
Pros
- Titanium housing: ultra-rugged and corrosion-resistant
- Multi-reticle system offers targeting flexibility
- Long battery life with solar backup
- Easy battery replacement (no re-zero needed)
Cons
- Slightly heavier and pricier than the 507C
5) Holosun 509T X2
In contrast to open emitter optics such as the 507C, the 509T is, in general, not enclosed; that is, the emitter and lens are not covered in a titanium housing.
This renders it either mud, rain, snow, or dust-proof, and this is quite a beneficial point to professionals or outdoorsmen.
The optic includes Holosun-proven Multi-Reticle System, which gives either a 2 MOA dot with 32 MOA circle or both to be versatile at CQB or for more accurate shots.
Has Shake Awake, Solar Failsafe, as well as a CR1632 battery tray that is side loaded, and as much as 50,000 hours of run time. Although it is an RMR footprint incompatible, Holosun comes with an adaptor plate, giving it the ease of installation on RMR-compatible slides.
Specications
- Reticle: 2 MOA dot, 32 MOA circle, or both
- Housing: Grade 5 Titanium (enclosed emitter)
- Brightness: 12 settings (10 daylight, 2 NV)
- Battery: CR1632, ~50,000 hrs, side tray
- Solar Failsafe / Shake Awake: Yes
- Footprint: RMR-compatible via included adapter
- Window Size: 0.66 x 0.9 in
- Waterproof: IP67
- Weight: 1.72 oz
Pros
- Enclosed emitter protects from dirt, water, fog
- Titanium housing is nearly indestructible
- Solar backup and long battery life
- Includes RMR adapter plate
Cons
- Slightly heavier and bulkier than open emitter models
6) Holosun 407C X2
Holosun 407C X2 is the cheapest red dot sight in the roster of Holosun products that use the RMR-footprint model, although you should not be deceived by the low cost of the item.
It performs wonderfully, has a sturdy build, and offers identical intelligent functions compared to its more expensive brothers and sisters, and that makes it one of the best choices among people with low budgets in mind, but it demands a high-quality product.
Has only one 2 MOA red dot without options of the circle or multi-reticle, as seen in the 507C. It is ideal to build on a shooter who likes a clean, uncluttered sight picture, either on a defensive pistol or a carry gun, or an optics-ready rifle.
It includes Shake Awake motion sensing, Solar Failsafe, and an incredible 50,000 hours of battery life on a side-loaded CR1632 battery. The brightness may either be made manual or automatic with the use of the solar panel.
This is because its housing is made of 7075-T6 aluminum with the RMR footprint, which supports many mounts and slides. The 407C X2 is not exactly the lowest-level model in the offerings of Holosun, and as Visceny points out, the model is ostensibly at the entry point; it does not mean that it lacks the robustness and durability on par with superior models.
Specications
- Reticle: 2 MOA dot (red or green)
- Material: 7075-T6 Aluminum
- Battery: CR1632, ~50,000 hrs, side load
- Brightness Settings: 10 daylight, 2 night vision
- Solar Failsafe / Shake Awake: Yes
- Window Size: 0.91 x 0.63 in
- Footprint: RMR compatible
- Weight: 1.5 oz
- Waterproof: IP67
Pros
- Affordable without sacrificing durability
- Long battery life + solar backup
- Clean, precise 2 MOA dot
- Easy side battery access
Cons
- No circle/dot reticle options
7) Holosun EPS (Full‑size)
The Holosun EPS (Enclosed Pistol Sight) Full-Size is a durable, closed-emitter red dot made to withstand extreme environmental conditions to meet the requirements of the shooter who wants the full sight picture, maximum protection.
Although it is not an RMR footprint, it does include an RMR adapter plate and is therefore fully compatible with RMR-cut slides, which is a massive advantage to Glock MOS, Walther PDP, and other optics-ready pistols.
As opposed to open emitters (such as the 507C), the EPS completely seals the emitter so that there is no problem with dust, water, or mud or lens fogging.
It is a popular product with concealed carriers, people using it for duty, and all those shooting in rough weather. The optic can be ordered with a 2 MOA dot, 6 MOA dot, or Multi-Reticle System (MRS) that consists of a 32 MOA circle and 2 MOA dot.
Constructed on the 7075-T6 aluminum material, EPS had Shake Awake, Solar Failsafe, auto/manual enhancements of the brightness, plus up to 50,000-hour runtime with side-loading CR1620 battery tray.
Specications
- Reticle: 2 MOA dot, 6 MOA dot, or MRS
- Housing: 7075-T6 Aluminum (enclosed emitter)
- Battery: CR1620, ~50,000 hrs, side load
- Brightness Settings: 10 daylight, 2 night vision
- Solar Failsafe / Shake Awake: Yes
- Footprint: Adapter plate to RMR included
- Window Size: 0.90 x 0.63 in
- Waterproof: IPX8
- Weight: 1.4 oz
Pros
- Fully enclosed emitter protects against debris and moisture
- Multiple dot options and MRS versatility
- RMR adapter plate included
- Long battery life and solar backup
Cons
- Slightly taller than open emitter optics
Factors to Consider When Choosing The Top-Rated Holosun Red Dot with RMR Footprint
Choosing a red dot sight, that is a Holosun red dot sight with RMR footprint, it is important to select one that is suited to your particular firearm, shooting, and target situating, and weather conditions.
- Reticle Type Precision versus Speed
At the very simple end, Holosun has simple 2 MOA dots (e.g., 407C X2), and at the more sophisticated end, the Multi-Reticle Systems (MRS): e.g., 507C, 508T, and 509T, all with a dot and 32 MOA circle. The circle-dot combination is best when it comes to quickly securing a target during defense or a competition. A small and clear 2 MOA dot can be the choice of precision shooting.
- Emitter Type: Open vs. Enclosed
The open emitters (such as the 507C, 508T) are less heavy and low-profile, but the lens and the emitter are exposed. Enclosed emitters (such as a 509T or EPS) keep the inside dry or free of water and dust, and carbon, and as such are well suited to duty or harsh conditions.
- Housing Material: Aluminum or Titanium
When durability matters, you might want to choose a titanium version such as 508T or 509T, as it has a better level of impact resistance and corrosion resistance. Far less expensive and lighter still, but quite rugged aluminum models (e.g., 507C) are still available.
- Battery Access and Life
All recent Holosuns have side-loading CR1632 batteries and amazing battery life (~50,000 hours). To have some additional safety of battery backup, seek the models of Solar Failsafe.
- Slide Compatibility and Height
Although all the provided models are RMR-compatible, height profiles differ. When it comes to co-witness with iron sights, look at lower 1/3 or absolute co-witness capability. Other enclosed models are a fraction higher and can need suppressor-height sights.
FAQs
What does “RMR footprint” mean?
The RMR footprint refers to the screw hole pattern and recoil lug placement originally designed for Trijicon’s RMR optic. Today, it’s an industry-standard footprint used by many optics, including Holosun models like the 507C, 508T, and 407C, allowing them to mount on a wide variety of slides and adapter plates.
- Which Holosun optics have an RMR footprint?
Popular Holosun models with a native or adapter-supported RMR footprint include:
- Holosun 507C X2
- Holosun 507 COMP
- Holosun 508T X2
- Holosun 407C X2
- Holosun 509T (with adapter plate)
- Holosun EPS Full Size (with adapter plate)
- Holosun 507C ACSS Vulcan
- Can I co-witness Holosun red dots with iron sights?
Yes, especially on optics-ready pistols. Many Holosun red dots support lower 1/3 or absolute co-witness with standard or suppressor-height iron sights, depending on the optic height and slide cut.
- What’s the difference between open and enclosed emitters?
Open emitters (like the 507C or 508T) expose the laser emitter, which may be vulnerable to water or debris. Enclosed emitters (like the 509T and EPS) fully seal the emitter inside the housing, offering better protection for duty, carry, or adverse conditions.
Final Verdict
Choosing the right Holosun red dot with an RMR footprint depends on your personal shooting needs, budget, and environmental demands.
If you’re after a lightweight, open-emitter optic, the 507C X2 delivers a perfect balance of clarity, performance, and price.
For those prioritizing durability and duty-level ruggedness, the 508T or 509T offer titanium or enclosed-emitter protection that’s hard to beat. Need fast reticle acquisition and a large window for competition? The 507 COMP was built for it.
All models reviewed provide excellent battery life, smart features like Shake Awake and Solar Failsafe, and compatibility with a wide range of pistols.
With Holosun, you don’t have to choose between price and performance you get both. Use this guide to match the best optic to your firearm, and you’ll be ready to shoot faster, more accurately, and with total confidence.
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