7 Best Sig Sauer P365 Red Dot

Hey Shooters, Welcome to the Best Sig Sauer P365 Red Dot Review in 2024.

Over the years, I’ve tested a multitude of red dot sights specifically for the SIG P365, so I can tell you precisely what works and what doesn’t. 

I’m here to share my extensive knowledge and hands-on experience with various red dot sights designed for the SIG P365.

So, what red dot fits Sig Sauer P365?

Here are seven red dot sights that fit the Sig Sauer P365 perfectly.

Sig Sauer P365 Red Dot	Category
Trijicon RMRcc	Best Overall
Holosun 507K X2	Best Budget Alternative of Trijicon
Vortex Optics Viper	Best Value for Money
SIG Romeo Zero	Best Compatibility
Crimson Trace CTS-1550	Best for Close Range Shooting
Shield RMSc	Best Micro Red Dot
Swampfox Sentinel	Best Compact Sight

Top 7 Best Red Dot For Sig P365

1. Trijicon RMRcc – Best Overall
2. Holosun 507K X2 – Best Budget Alternative of Trijicon
3. Vortex Viper – Best Value for Money
4. SIG Romeo Zero – Best Compatibility 
5. Crimson Trace CTS-1550 – Best for Close Range Shooting 
6. Shield RMSc – Best Micro Red Dot
7. Swampfox Sentinel – Best Compact Sight

1. Trijicon RMRcc – Best Overall

Outstanding Durability: One of the standout features of the RMRcc is its insane durability. This sight is basically invincible, and it’s all thanks to the unique patented housing shape. 

Any impact force is directed away from the lens, significantly increasing the sight’s toughness. I’ve knocked my gun against tables and dropped it, but the RMRcc doesn’t show any signs of wear or tear. 

It’s this durability that gives you the confidence to use your gun in any situation, knowing your red dot sight won’t fail you when you need it the most.

User-Control Illumination Settings: The RMRcc offers 8 brightness settings, including one super-bright mode and two settings for night vision. 

This level of customization allows for optimal sight picture in varying lighting conditions. In bright sunlight or in the dimness of twilight, I’ve found that I can quickly adjust the brightness for a clear, crisp dot. 

And it’s not just about seeing the red dot; it’s about how quickly you can acquire it under different circumstances. Quick target acquisition is critical, and this feature allows you to adapt in a split second.

Easily Adjustable Windage/Elevation: Adjusting the windage and elevation on this sight is a piece of cake. You don’t need any specialized tools; a simple flathead screwdriver will do the trick. 

Each adjustment has a 3 MOA per tick, making it super easy to get your aim right. I’ve had to make adjustments on the fly, especially during dynamic shooting situations, and the ease of this feature has saved me time and, quite possibly, would save lives in a critical moment.

Crisp 3.25 MOA Dot: The RMRcc comes with a 3.25 MOA dot, which offers an ideal balance for both pinpoint accuracy and quick target acquisition. The dot is crisp and well-defined, making it extremely easy to maintain focus on your target. 

When I tested this feature, it was evident that the clear aiming point made for a much better shooting experience.

Snag-Free Design: Drawing and holstering your SIG P365 with the RMRcc is smooth, thanks to its snag-free design. 

The rounded edges on the sight ensure that you can make a quick and unimpeded draw, which is crucial in high-pressure scenarios. I’ve practiced drawing and holstering multiple times, and not once did I feel any snagging or sticking, which could be a matter of life or death in an emergency situation.

Lightweight and Compact: At just 1 oz, this sight adds hardly any weight to your SIG P365. It’s lightweight but doesn’t compromise on any of the essential features. 

The compact design also makes it perfect for everyday carry, contributing to the overall comfort and ease of use. When I had this on my P365, it felt like the gun and sight were one unified piece, not an awkward add-on.

My Experience 

It’s been nothing short of spectacular. From the crispness of the red dot to the ease of adjustments, it’s enhanced my shooting experience significantly.

2. Holosun 507K X2 – Best Budget Alternative of Trijicon

Multi-Reticle System: One of the standout features on the Holosun 507K X2 is its Multi-Reticle System (MRS). It allows you to choose between a 32 MOA circle with a 2 MOA dot or either of them separately. 

The large circle aids in quick target acquisition, especially at shorter distances, while the 2 MOA dot provides accuracy for longer shots. I’ve found this extremely useful in the field, especially when transitioning between different types of shooting scenarios. 

The MRS makes the sight versatile and adaptable to your specific needs at any given moment.

Highly Durable: The Holosun HS507K-X2 is no slouch when it comes to durability. Made from 7075 Aluminum, this sight can withstand a fair amount of abuse. 

While it might not match the Trijicon in ruggedness, it’s still pretty darn solid. I’ve put it through its paces and held up without a hitch. 

The anodized finish also provides a good degree of corrosion resistance, which is a plus for those who are out in the elements.

Shake Awake Feature: I have to say, the “Shake Awake” feature on this sight is brilliant. When the sight detects motion, it automatically turns on. 

This is an excellent feature for situations where quick action is needed. There’s no fumbling around with switches or buttons. 

As soon as you draw your SIG P365, the sight is active and ready to go. I found this incredibly useful in high-pressure situations and think it significantly advantageous.

Lock Mode: The Lock Mode on this sight is another practical addition. It essentially locks the sight settings to prevent any accidental changes, which could happen in the heat of the moment or while holstering and drawing your weapon. 

I’ve used this feature numerous times to keep my settings just the way I like them, ensuring that I don’t have to recalibrate during crucial moments.

Lightweight: Just like the Trijicon, the Holosun weighs in at a meager 1 oz, which makes it incredibly lightweight. For those who carry every day, this is a significant factor.

The lightweight nature ensures that it doesn’t make your SIG P365 feel top-heavy or unbalanced. During my field tests, the sight felt like an extension of the gun rather than an add-on.

Long Battery Life: Another huge plus is the long battery life. It boasts up to 50,000 hours on a single CR2032 battery. Let’s face it; nobody likes to change batteries often, especially on a tool that may be critical for your safety. During my time using it, I’ve yet to encounter any battery issues, making it reliable for extended use.

My Experience 

I had a great experience using the Holosun 507K X2. From its multiple reticle options to its “Shake Awake” feature, it met almost all my needs. It was like having several sights rolled into one.

3. Vortex Viper – Best Value for Money

Fast Target Acquisition: Now, let’s talk about how quickly you can acquire your target with this sight. With a 6 MOA dot, the Viper allows for rapid target engagement. 

It’s a low-profile sight, which means you can easily co-witness it with your iron sights. During my tests, the speed at which I could align the sight and get my shots off was impressive. 

The 6 MOA dot is easy to pick up and doesn’t obstruct your view of the target, making for efficient shooting.

Shockproof: The Viper’s shockproof construction is something to admire. This sight can withstand the heavy recoil and impact, a must-have when mounting it on a powerful weapon like the SIG P365. 

I’ve had zero issues with the sight losing zero or malfunctioning due to heavy recoil. It’s as sturdy as they come in this price range.

Parallax Free: Nobody likes a sight that messes up when you move your head. The Vortex Viper is parallax-free, which means that the dot stays on target even when you shift your head position. 

This feature turned out to be invaluable when I was taking aim in different postures.

Easy Windage/Elevation Adjustment: Tool-free adjustments? Yes, please! The Viper makes windage and elevation adjustments easy. 

With its 1 MOA adjustments, you can fine-tune your sight to your exact preferences quickly. This level of convenience just makes your life easier when you’re out in the field.

Fully Multi-Coated Lenses: What stood out to me was the lens quality. The lenses are fully multi-coated, providing an ultra-clear field of view. 

Whether you’re dealing with intense sunlight or low-light scenarios, the Viper delivers a clear and unobstructed sight picture, thanks to these top-notch lenses.

My Experience 

The Viper felt like it was tailor-made for my SIG P365. The low profile, ease of adjustments, and crisp, clear lens made for an enjoyable shooting experience.

4. SIG Romeo Zero – Best Compatibility 

Precision: Let’s get straight to the point: Romeo Zero is a marksman’s dream. Designed with precision shooting in mind, it offers a 3 MOA dot reticle that is sharp and easy to focus on. 

Whether you’re in a competition or just looking to improve your accuracy at the range, this sight has got you covered. The level of detail that goes into the sight is noticeable, especially when you’re trying to get those long-range shots in.

Auto Dimming: We all know how quickly lighting can change outdoors. With the Romeo Zero, you don’t have to worry about manual adjustments thanks to its 10 brightness settings and an auto-dimming feature. 

When I took this baby for a spin, I was blown away by how efficiently it adjusted to varying light conditions, ensuring my aim stayed consistent.

Ultra-Low Profile Design: Size matters, especially when you’re dealing with a compact firearm like the SIG P365. 

The Romeo Zero’s ultra-low profile design is perfect for this. It takes up very little space, making it a fantastic choice for those who use additional accessories like lasers or flashlights. 

Ruggedness: With rugged aluminum housing and water resistance up to 1 meter, this sight can handle anything you throw at it. 

Seriously, it’s built like a tank. During my field tests, it was exposed to rain and rough handling, and it took everything like a champ without any performance issues.

MOTAC System: MOTAC or Motion Activated Illumination System is like a cherry on top. The sight powers up when it senses movement and powers down when idle. It’s a simple yet effective feature for prolonging battery life, and it worked flawlessly during my use.

Lens Durability: The SpectraCoat HD Polymer Lens is ten times more impact-resistant than traditional glass lenses. 

Think of it as a superhero shield for your sight. No worries about scratching or damaging the lens during rough use. It’s built to withstand quite a beating.

My Experience

The Romeo Zero felt like the missing puzzle piece for my SIG P365. It took my shooting experience to the next level, providing me with enhanced accuracy and adaptability in various shooting scenarios.

5. Crimson Trace CTS-1550 – Best for Close Range Shooting

Integrated Co-Witness Sight: First things first, this sight comes with an integrated Co-Witness notch, which is a big deal. 

It’s like a safety net for your targeting, offering a mix of both the reflex sight and your iron sights. I found it really helpful in stress tests and rapid shooting exercises.

Long Battery Life: Battery life is often a concern with electronic sights. No worries here; the CTS-1550 is armed with a 20,000-hour battery life powered by a single CR2032 battery. 

The best part? The battery compartment is underneath the device, but it doesn’t interfere with the co-witness feature. It gives you peace of mind, knowing that the sight is going to be functional for a long time.

Ambient Light Sensor: The ambient light sensor is a smart little function that adjusts the brightness of the 3.0 MOA red dot depending on your lighting conditions. 

If you’re moving from bright outdoors to a dim indoor range, the sight will tweak itself accordingly. The included cover also turns the device off in total darkness, preserving that precious battery life.

Lightweight Polymer Construction: The sight’s frame is built from lightweight polymer, which is a big yes for anyone who doesn’t want their SIG P365 to feel like a brick.

I found this really handy for extended shooting sessions and also when carrying concealed. Light on weight but heavy on features; what more could you ask for?

My Experience 

Mounting the CTS-1550 on my SIG P365 felt like a natural fit. From the get-go, the sight was easy to align, and the integrated co-witness sight was a useful addition. Whether in target practice or simulated self-defense scenarios, the sight held up well.

6. Shield RMSc – Best Micro Red Dot

Aircraft Aluminum Construction: You know what’s great about aircraft aluminum? It’s incredibly tough without weighing a ton. The Shield RMSc takes advantage of this with an aircraft aluminum construction that ensures your sight can take some serious punishment. 

I spent several days field-testing this sight under various conditions, and let me tell you, it’s built like a tank but feels like a feather.

LED 4 MOA Dot: The RMSc offers a crisp, 4 MOA LED dot that’s perfect for any shooting condition. I found this size dot to be a sweet spot: big enough for quick target acquisition but small enough for precision shots. 

Unlike some red dots that look distorted, this one’s sharp, clear, and perfect, even for people with astigmatism.

Long Battery Life: With an approximate 3-year battery life from a CR2032, worrying about the sight dying mid-use is almost nonexistent. 

The efficient power use means that you can spend more time shooting and less time fussing with battery replacements. Trust me, that’s a convenience you’ll appreciate when you’re out in the field.

Parallax-Free 1X Lens: The parallax-free 1X glass lens gives you a crystal-clear view. I noticed that my aim was a lot more accurate, thanks to this. 

In real-world applications, this means your target and reticle stay aligned, even when you’re shifting your viewing angle.

Ultra Low Profile: The ultra-low profile of this sight is an excellent feature, especially for those who prefer a sleek, non-bulky look. 

And yes, it co-witnesses beautifully with your stock sights. I find this super useful, as it offers a straightforward transition between the sight and your stock iron sights, just in case.

Lightening Cuts: One aspect that sets the RMSc apart from competitors is its lightening cuts on both sides of the optic’s body. 

Not only do they add aesthetic appeal, but they also serve a functional role by further reducing weight. When you’re carrying for long periods, every ounce matters.

My Experience 

Fitting the RMSc on my SIG P365 was straightforward. Once installed, it sat flush with the slide and added minimal weight. Field testing was a joy; the sight performed admirably under various lighting and environmental conditions. The crisp dot and clear lens were particularly standout features.

7. Swampfox Sentinel – Best Compact Sight

Compact Design: The Swampfox Sentinel really nails it when it comes to size. With dimensions of just an inch by an inch by 1.6 inches, it’s small enough to maintain the natural balance of your SIG P365. 

The compact footprint makes it easy to draw your weapon quickly, which can be critical in high-stress situations.

CNC Machined 7075-T6 Aluminum: The body is crafted from 7075-T6 aluminum, known for its exceptional durability. This isn’t just any material; it’s CNC machined to precision. 

I’ve taken this sight out in various conditions, and it’s proven to be robust. Whether you’re dealing with rain or the bright sun, this sight won’t let you down.

Auto-Brightness: The Sentinel-A model comes with an auto-brightness feature that adjusts based on the surrounding light conditions. 

There is no need to manually change brightness levels, which is especially useful if you find yourself moving between different lighting conditions frequently.

Long-lasting Battery: Powered by a CR2032 battery, the sight offers up to two years of real-world battery life. That’s a lot of peace of mind packed into this small sight, making it a reliable option for daily carry.

My Experience 

The sight felt like an extension of the gun, and it performed admirably in different shooting scenarios. The auto-brightness feature was a big win, adapting quickly to changing light conditions.

Final Verdict

Alright, folks, we’ve reached the end of the line, and it’s time to sum things up. After extensively testing these sights on the SIG P365, I can confidently say there’s something for everyone, depending on what you’re looking for. 

Whether you’re on a budget, seeking premium features, or something in between, one of these red dot sights is bound to tick your boxes. 

However, if I had to choose a single sight that stands out from the rest, it would be the Trijicon RMRcc. It simply nails the balance between functionality, durability, and versatility.

FAQ’s

What optic cut does Sig P365 have? 

The SIG P365 has an optic cut compatible with Romeo Zero, Holosun 407k/507k, and Shield RMSC.

Can you put a Holosun on a Sig P365? 

Yes, you can put a Holosun on a SIG P365 using the M.R.A. Red Dot Adapter Mount.

What Romeo fits P365? 

The ROMEO Zero or any optic with the same footprint is compatible with the P365.

What does the P stand for in Sig Sauer P365? 

The “P” in SIG Sauer P365 stands for “Pistole,” which is German for “Pistol.”

How accurate is the SIG P365? 

The SIG P365 offers very good practical accuracy, aided by a quality trigger and easy-to-see sights.