As an experienced shooter, I’ve tested many sights on various firearms, but the SIG Romeo1 Pro, when paired with the SIG MP18, stood out as my top choice.
Whether in the practice range or the field, the Romeo1 Pro delivered precise aiming and seamless performance.
The Romeo1 comes with features like multiple intensity settings, a 3 MOA red dot, and a TruHold Lockless Zeroing System, making it the best red dot sight for rapid target engagement under various lighting conditions.
This article aims to provide an in-depth review and analysis of 7 Best SIG M18 Red Dot Sights.
Top 7 Best Red Dot Sight for SIG M18
1. SIG Romeo1 Pro – Overall Best
In my time with the SIG Romeo1 Pro, I found it to be a fantastic addition to my SIG MP18.
It’s a fairly durable sight and can certainly handle a fair amount of abuse. The molded glass aspheric lens, featuring high-performance coatings, delivers high light transmittance with no distortion, enhancing my visual clarity.
The sight’s 3 MOA red dots (6 MOA also available) and multiple intensity settings allowed for rapid target engagement, providing me with a clear edge in various lighting scenarios.
Its ultra-long battery life of around 20,000 hours with one CR1632 battery ensures that it’s ready to perform when needed.
Additionally, Sig’s MOTAC system extends the battery life even further, making it a more practical choice for long-term use.
During testing, the TruHold Lockless Zeroing System proved its worth by absorbing handgun recoil and returning to zero, even after firing hundreds of rounds.
A memorable instance was during a rainy day at the range; despite challenging weather, the sight’s IPX7 waterproof rating and fog-proof features allowed for a clear and sharp view.
It’s also waterproof in up to 1 meter of water, and you can even get a steel shroud that goes around the sight if you’re really concerned with durability.
Flaw but not a dealbreaker
- No night vision setting is available.
2. Leupold DeltaPoint Pro – Runner Up
When it comes to finding the perfect match for my SIG MP18, the Delta Point Pro holds the runner-up spot.
What strikes me most about this red dot sight is its robust construction and exceptional features.
I found the 2.5 MOA dot reticle to be just the right size for easy target acquisition while still allowing for precise shots at a distance.
The motion sensor technology, which turns the sight on at the slightest movement, is a clever addition that helps extend the 300-hour battery life. Mounting the DPP on the M18 was a breeze, thanks to the optic cut designed specifically for this footprint.
The large sight window, clear glass, and top-loading battery compartment added to my excellent experience with the sight, making it a no-brainer for me to choose for my MP18.
Flaw but not a dealbreaker
- No night vision setting is available.
3. Eotech EFLX – Highly Recommended
I recently paired the Eotech EFLX with my SIG MP18, and I’ve got to say, it’s an impressive piece of gear.
The first thing that grabbed my attention was the durability of this sight. With its aluminum housing, I felt confident taking it out into rough terrains, and the waterproof rating only added to that assurance.
What truly set it apart for me was the large sight window. With clear glass and a wide field of view, I was able to acquire targets quicker and more precisely. The top-loading battery compartment is such a handy feature, making battery changes quick and simple.
With the 3 MOA dot reticle, shooting with the EFLX felt natural and accurate, and its compatibility with the Delta Point Pro footprint made mounting on the M18 easy. It was an absolute joy to use and matched my SIG MP18 perfectly.
Flaw but not a dealbreaker
- Con: A bit pricey.
4. Trijicon RMR – Best for Experts
Using the Trijicon RMR Type 2 with my SIG MP18 has been a delightful experience. One of my standout features is the range of available dot sizes.
Choosing between 1 MOA, 3.25 MOA, and 6.5 MOA dots has allowed me to customize my shooting experience, and I found the 3.25 MOA dot to be my personal favorite.
It’s small enough for accurate shots but big enough to easily catch your eye. The eight brightness settings, including two-night vision-compatible options, bring flexibility to any shooting environment.
Now, let’s talk durability! The RMR Type 2 is as rugged as they come. I’ve put it through some tough conditions, and it’s never let me down.
Flaw but not a dealbreaker
- Con: Very expensive.
5. Holosun 508T X2 – Top of the line
Testing the Holosun 508T on my SIG MP18 has fascinated me. What caught my eye first was the 12 brightness settings, two of which are night-vision compatible, and the fantastic 50,000-hour battery life.
The solar panel backup is a great touch, and the Shake Awake technology is a smart battery-saving feature that impressed me.
Now, let’s talk about the reticles – having three options to choose from (2 MOA dot, 32 MOA Circle, or a Circle Dot Reticle) really opened up my shooting versatility.
I personally fell in love with the Circle Dot Reticle, which provided excellent speed and accuracy.
With titanium housing for durability and lock mode to keep my settings secure, the Holosun 508T has earned a special spot in my arsenal.
Flaw but not a dealbreaker
- Con: You need an adapter plate to mount it.
6. Holosun 407K X2 – Best for Beginners
The Holosun 407k has become a trusty companion to my SIG MP18. From its strong 7075 T6 aluminum housing to the 6 MOA dot, it’s hard not to appreciate the innovation.
The 6 MOA dot, available in both red and green, is simple to pick up and never gets lost in the sight picture. It’s an all-weather champ, paired with 50,000 hours of battery life and an easily adjustable brightness setting.
But what made me fall in love with this optic? The side-loading battery trays and the 6 MOA dot that’s just right for precision without obscuring the target.
Flaw but not a dealbreaker
- Con: The finish is not up to standards.
7. Holosun 507C X2 – Best Value for Money
The Holosun HS507C X2 is an optic that won’t break the bank but still delivers the goods.
Tested on my SIG MP18, this sight impressed me with its rugged aluminum housing, a big step down from the titanium in the 508T but still tough.
It packs 50,000 hours of battery life and has a convenient side-loading battery tray. What got me hooked is the Multiple Reticle System; the Circle Dot Reticle makes shooting fast and accurate.
Add in the solar panel and shake awake technology, and you’re looking at an affordable sight that’s brimming with quality features. Whether you’re out in the sun or in low light, this sight has you covered.
Flaw but not a dealbreaker
- Con: There’s a bluish tint in the lens.
Conclusion
In the extensive world of red dot sights, finding the right fit for your firearm is key to an exceptional shooting experience.
For my SIG MP18, the SIG Romeo1 Pro stood out as the best choice, bringing an impressive array of features and performance together. Its compatibility, durability, and innovative
technology gave me a seamless and satisfying time at the range.
But remember, each sight comes with unique features that may align better with your specific needs and preferences.
FAQs
Is the Sig P320 M18 optics ready?
Yes, the P320-M18 comes standard with SIGLITE night sights and is directly compatible with the ROMEO1 PRO, making it optics ready.
Will the Romeo Zero fit the M18?
Yes, the SIG SAUER Romeo Zero Red Dot Sight will fit an M18.
What color is the SIG M18?
The color of the SIG M18 is Coyote Tan.
