Hey Shooters! Hit the mark with Best Red Dot For Sig M18 in 2024.
I’ve dedicated countless hours in research, test-firing, and understanding the nuances of each sight on a Sig M18. One model stands out from the crowd, the Trijicon RMR Type 2.
This isn’t merely an opinion, it’s a conclusion borne of extensive, hands-on testing. This sight has consistently proven to be an unparalleled companion to the Sig M18.
The article will explore 6 Red Dot options, evaluate their pros and cons, and ultimately guide the readers in making an informed decision about the most suitable red dot for Sig M18.
| Best Red Dot For Sig m18 | Category |
| Trijicon RMR | Best Overall |
| Leupold DeltaPoint Pro | Highly Durable |
| Holosun HE507C X2 | Best Budget Trijicon Alternative |
| EOTECH EFLX Mini | Ultra Compact |
| Holosun HE508T-RD X2 | Best Multiple Reticle |
| Sig Sauer Romeo 1 Pro | Best Lens Clarity |
Top 6 Best Sig M18 Red Dot
- Trijicon RMR Type 2 – High-End Performance
- Leupold DeltaPoint Pro – High Durability
- Holosun HS507C X2 – Best Budget Alternative of Trijicon
- EOTECH EFLX – Ultra Compact
- Holosun HE508T-RD X2 – Multiple Reticle
- Sig Sauer Romeo 1 Pro – Best Lens
1. Trijicon RMR Type 2 – Best Optic For M18
Overall Score 9.5
Tested With Scoring System 2.0
Why I Love It
The Trijicon RMR Type 2 is a rugged, miniature reflex sight that excels in durability, versatility, and reliable performance.
Trijicon RMR Type 2 impresses me with its remarkable robustness and versatility. The multiple MOA dot sizes are a game-changer, allowing me to adapt my shooting style based on the situation or my preferences at any given moment.
Pros
Exceptional durability and ruggedness
Adjustable LED sight offers great visibility
Multiple MOA dot options cater to various shooting needs
Excellent battery life
Can be mounted on Sig M18 using an adapter plate
Cons
Not a direct fit for Sig M18—requires an adapter plate
Battery needs to be accessed from the bottom, requiring re-zeroing after a change
Adjustable LED Sight: The adjustable LED allows you to control the brightness settings effortlessly, ensuring optimal visibility in any light condition.
Dual-Illuminated Option: This feature offers you an edge in low-light scenarios, as it illuminates the reticle and adjusts automatically to the changing light conditions.
Multiple MOA Dot Options: The sight provides three MOA dot options (1.0, 3.25, and 6.5). Each caters to a different shooting preference, whether it’s long-range accuracy, a balance of accuracy and visibility, or enhanced visibility for close-quarter scenarios.
Redesign for Durability: Trijicon’s redesign of the RMR Type 2 has bolstered its durability even further. With a tighter battery compartment, it promises more reliable performance under extreme conditions.
Slide Racking: The robust lens design of the RMR Type 2 allows you to rack the slide on hard objects without damaging it, underlining its build quality.
Compatibility: While the Sig M18 is cut for the Delta Point Pro footprint, fitting the RMR Type 2 onto the M18 is straightforward using an adapter plate. It may not be a direct fit, but it is certainly a manageable process.
My Experience
In my hands-on experience with the RMR Type 2, I found its reputation for durability and reliability well-earned. The 3.25 MOA dot was my personal favorite—it’s the ideal balance between easy eye acquisition and accuracy. The adjustable LED sight and dual-illuminated options further elevated my shooting experience, especially in varying light conditions.
2. Leupold DeltaPoint Pro – High Durability
Overall Score 8.8
Tested With Scoring System 2.0
Why I Love It
The Leupold DeltaPoint Pro seamlessly integrates reliability, durability, and technological innovation.
The motion sensor technology, illuminated reticle, and top-loading battery compartment, in particular, make it a joy to use.
Pros
Excellent durability and reliability
High-grade optical system ensures excellent visibility
Motion Sensor Technology maximizes battery life
Top-loading battery compartment simplifies battery changes
Perfectly compatible with the Sig M18
Cons
Only two MOA options available, limiting flexibility compared to some competitors
The Leupold DeltaPoint Pro is a highly durable and versatile red dot sight, known for its reliability, battery efficiency, and high-quality optical system.
Pro-Grade Red Dot Optical System: The high-grade optical system provides excellent light transmission, glare reduction, and superior clarity even under challenging lighting conditions.
Illuminated Reticle: The illuminated reticle enhances target acquisition speed in low-light situations, providing a significant edge to shooters.
Motion Sensor Technology: MST helps prolong battery life by deactivating the reticle after 5 minutes of inactivity and reactivating upon movement.
Waterproof, Fogproof, & Shockproof: The sight is built to withstand extreme weather conditions and shocks, ensuring its performance remains unaffected in varied situations.
Top-Loading Battery Access: The DeltaPoint Pro features a top-loading battery compartment, allowing for straightforward battery changes without needing to remove the sight from your firearm.
Compatibility: The DeltaPoint Pro aligns perfectly with the Sig M18. Given that the M18 is designed for the DeltaPoint Pro footprint, mounting it on your gun is a breeze.
My Experience
My time with the DeltaPoint Pro on the Sig M18 was nothing short of impressive. The 2.5 MOA dot reticle hit the sweet spot for accuracy and quick target acquisition. I also appreciated the large sight window, which provided a broad field of view. The motion sensor technology was a boon, maximizing battery efficiency.
Leupold Deltapoint Pro vs Trijicon RMR
3. Holosun HS507C X2 – Best Budget Alternative of Trijicon
Overall Score 8.9
Tested With Scoring System 2.0
Why I Love It
What I find particularly impressive about the Holosun HS507C X2 is its combination of features.
The long battery life and the multiple reticle system give you a powerful, versatile optic at a great price point.
Pros
Versatile multiple reticle system
Solar failsafe provides power backup
Shake awake technology saves battery life
Multi-coated lens provides excellent visibility
Cons
Requires an adapter plate for mounting on Sig M18
Has a slight bluish tint that may affect visibility in certain conditions
The Holosun HS507C X2 is a highly reliable, feature-packed red dot sight that provides excellent durability and performance at a competitive price point.
Multiple Reticle System: The HS507C X2 comes with a multiple reticle system, offering a choice between a 2 MOA and a 32 MOA dot ring for versatile shooting scenarios.
Solar Failsafe: The sight features a solar failsafe that provides backup power, ensuring the sight remains operational even when the battery dies.
Shake Awake Technology: The sight employs shake awake technology that puts the device to sleep when not in use, conserving battery life and activating on movement detection.
Aluminum Housing: The sight is housed in 7075 aluminum, providing extreme strength and shock resistance, enhancing the overall durability of the sight.
Multi-Coated Glass Lens: The HS507C X2 is fitted with a multi-coated glass lens that offers maximum light wave transmission and resistance to wear and shock.
Compatibility: Although the HS507C X2 features an RMR footprint and requires an adapter plate for mounting on the Sig M18, the process is straightforward and results in a solid, sturdy setup.
My Experience
My experience with the HS507C X2 was thoroughly enjoyable. The multiple reticle system was a game-changer, providing flexibility in various shooting scenarios. The shake awake feature and solar failsafe provided a sense of reliability, knowing the sight wouldn’t let me down.
4. EOTECH EFLX – Ultra Compact
Overall Score 7.6
Tested With Scoring System 2.0
Why I Love It
The EOTECH EFLX excels in its simplicity and durability. The large sight window, coupled with the robust aluminum housing and long battery life, makes it a reliable tool for all shooting conditions.
Pros
Sturdy aluminum housing for enhanced durability
Wide field of view for rapid target acquisition
20,000-hour battery life ensures long-term reliability
Top access battery compartment for easy battery changes
8 brightness settings adapt to various light conditions
Cons
Dot reticle may be less precise for longer distances
A square viewing window might take getting used to for some shooters
Price Comparison
The EOTECH EFLX is an ultra-compact, highly robust reflex sight with a large viewing window and impressive battery life, designed for precise and rapid target acquisition.
Aluminum Housing: The EFLX features a rugged aluminum housing that significantly enhances its durability and resistance to tough conditions.
Large Sight Window: A large, square viewing window provides a wide field of view and ensures quick target acquisition.
20,000 Hour Battery Life: With around 20,000 hours of battery life from a single CR2032 battery, the EFLX ensures reliable long-term performance.
Top Access Battery Compartment: The top-loading battery compartment allows for easy battery replacements without the need to remove the optic.
8 Brightness Settings: With 8 brightness settings, the EFLX provides optimum visibility under varying light conditions.
Compatibility: The EFLX features a Delta Point Pro footprint, which is compatible with the Sig M18, making it easy to mount directly on the firearm without the need for additional adapters.
My Experience
In my use, the EFLX performed exceptionally. The wide field of view and quick target acquisition significantly improved my shooting experience. The top-loading battery design also proved to be highly convenient.
5. Holosun HE508T-RD X2 – Multiple Reticle
Overall Score 7.6
Tested With Scoring System 2.0
Why I Love It
The Holosun HE508T-RD X2 stands out for its versatility, robustness, and intelligent power management. The multiple reticle system and the ability to adjust brightness levels ensure optimal performance in diverse shooting scenarios.
Pros
Durable titanium housing ensures long-term reliability.
Solar Failsafe and Shake Awake technologies enhance battery performance.
Multiple Reticle System offers flexibility in targeting.
12 brightness settings adapt to a variety of light conditions.
Side-mounted battery tray simplifies battery replacement.
Cons
Needs an adapter plate for mounting on Sig M18.
High-end pricing may not be suitable for budget-conscious users.
The Holosun HE508T-RD X2 is a versatile, highly durable red dot sight that offers multiple reticle options, excellent power management, and robust titanium construction.
Titanium Housing: The sight comes with a durable, CNC-machined titanium housing that ensures it can withstand heavy usage and adverse conditions.
Solar Failsafe Technology: The Solar Failsafe technology allows the sight to remain functional even if the battery runs out, thanks to its integrated solar panel, ensuring continuous performance.
Shake Awake Technology: The Shake Awake technology enables the sight to conserve battery by going dormant when not in use and activating once movement is detected.
Multiple Reticle System: The sight provides a flexible shooting experience with its Multiple Reticle System, allowing you to choose from a 2 MOA dot, a 32 MOA circle, or a combination of the two.
12 Brightness Settings: With 12 brightness settings, including two that are night-vision compatible, the sight allows for adjustments to any light condition.
Compatibility: While the sight comes with a Trijicon RMR footprint, you will need an adapter plate to mount it on the Sig M18. Once mounted, the combination of the sight and gun delivers an impressive shooting experience.
My Experience
Using the HE508T-RD X2 was a pleasure, with its numerous features enhancing my shooting. The Multiple Reticle System offered flexibility in shooting, while the Solar Failsafe and Shake Awake technologies ensured uninterrupted functionality.
Which is the Better and Why? Holosun 507c vs 508t
6. Sig Sauer Romeo 1 Pro – Best Lens
Overall Score 7.9
Tested With Scoring System 2.0
Why I Love It
The Sig Sauer Romeo 1 Pro impresses with its blend of durability, performance, and intelligent features.
The molded glass aspheric lens and MOTAC system ensure an exceptional shooting experience.
Pros
Durable construction with a protective shroud.
Molded glass aspheric lens ensures clarity and zero distortion.
The TruHold Lockless Zeroing System ensures accuracy.
MOTAC system conserves battery power.
Excellent light transmittance for fast target acquisition.
Cons
Not as durable as some other high-end models like the Delta Point Pro or Trijicon RMR.
The Sig Sauer Romeo 1 Pro is a robust, high-performing red dot sight, designed with advanced features for swift engagements and extended battery life.
Molded Glass Aspheric Lens: The sight comes with a molded glass aspheric lens that offers excellent light transmittance and zero distortion, ensuring clear and accurate target acquisition.
3 or 6 MOA Red Dot: You have the option of a 3 MOA or 6 MOA red dot, both offering various brightness settings for rapid engagements regardless of lighting conditions.
TruHold Lockless Zeroing System: The TruHold Lockless Zeroing System can absorb recoil from the handgun and return to zero, ensuring consistent accuracy.
Motion Activated Illumination System: The MOTAC system activates the sight with motion and powers down when still, providing substantial battery power saving.
Protective Shroud: The sight comes with a rugged protective shroud, enhancing the sight’s overall durability.
Compatibility: The Sig Sauer Romeo 1 Pro is designed to pair perfectly with Sig Sauer firearms like the M18, providing seamless integration and optimal performance.
My Experience
The Sig Sauer Romeo 1 Pro provided an exceptional shooting experience with its advanced features, particularly the MOTAC system and the TruHold Lockless Zeroing System. The sight also performed well under various light conditions, thanks to its 12 brightness settings.
Final Verdict
My extensive hands-on testing of various red dot sights on the Sig M18 led me to a decisive conclusion. Amongst the different options I examined, the Trijicon RMR Type 2 emerged as the standout choice.
However, let’s not dismiss the other contenders. Each sight offers its own unique strengths, and what works best for one individual may not be the optimal choice for another. This analysis was not about identifying the ‘best’ sight in absolute terms, but about recognizing the diverse preferences and needs of shooters.
While Trijicon RMR Type 2 is my top choice, your decision should hinge on which of these qualities resonate most strongly with your personal requirements and shooting style.
FAQ’s
What red dot will fit the Sig P320 M18?
The Leupold DeltaPoint Pro can fit directly on the Sig P320 M18. The others, like Trijicon RMR Type 2 or Holosun models, require an adapter plate.
Is the SIG M18 optics ready?
Yes, the SIG M18 is optics ready. It comes with a removable rear sight plate that allows you to mount a red dot sight.
What is Sig’s best red dot?
Based on the tested products, the Sig Sauer Romeo 1 Pro is the best red dot sight from Sig due to its advanced features and seamless integration with Sig Sauer firearms like the M18.
I noticed you didn’t test the Aimpoint ACRO P2. Why?
The Aimpoint ACRO P2 is indeed a top-notch sight, but I didn’t include it in this round of testing due to its larger size and unique design, which might not be everyone’s cup of tea. I wanted to focus on a variety of more compact options this time around. However, it’s definitely on my radar for future reviews.