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Sig Sauer Romeo5 1x20mm Compact 2 MOA Red Dot Sight

Sig Sauer Romeo5 Red Dot Sight Review

Sig Sauer is a company that was over 100 years in the making before it emerged as a high-quality European-made arms brand. Today they are a leader in gun optics and firearms safety and accessories, including rifle scopes.

Sig Sauer Romeo5 Red Dot Sight Review

We’re going to look at the Sig Sauer Romeo5-1x20mm models, which are compact and feature the company’s signature Motion Activated Illumination technology. This component maximizes the scope’s battery life by shutting the power off after a certain time frame of idle usage. In addition, the system comes back to life when you pick it up, making it a fully functional and high-tech scope to have on hand.

Of course, that’s not all there is to the Romeo5 group of rifle scopes. Today we will be looking at the Romeo5-1x20mm TREAD, high-mount scope, and original compact. With a solid aluminum design and sleek look, they can mount to any platform and will become a useful sidekick for hunters, competitive shooters, and more.

Overview of Features

In reality, the Romeo5 rifle scopes are good for just about anybody who wants to shoot. Individuals are invited to mount it to any platform (just be careful with the high-mount one) and get on their way.

Let’s look first at the Romeo5-1x20mm TREAD. It’s super compact at 62.7mm long and 38.1mm wide. It stands at 38.6mm tall and weighs in at just 5.1 ounces so it’s easy to see how you could mount this to any platform. The TREAD shares its elements with the original Romeo5-1x20mm as well as the high-mount version with the only main difference being that the latter comes with a T10 Torx 1.41” Riser mount only. In contrast, the TREAD and original come with both the T10 Torx 1.41” Riser and the Low Profile mounts.

As for what you can use these rifle scopes for, the answer is just about everything. People have used them on pistols, semi-automatic Bennelis, CZ Scorpions, and more. Amateurs and professionals benefit from these scopes whether they’re using them for tactical practice, military runs, or recreational shooting.

Sig Sauer SOR52001 Romeo5 1x20mm Compact 2 Moa Red Dot Sight, Black
Sig Sauer SOR52001 Romeo5 1x20mm Compact 2 Moa Red Dot Sight, Black

Technical Aspects

You will find the technical details for the Romeo5-1x20mm sights below. All of the models in this group share their primary features with each other so you can apply the specifications here to any of them.

Zoom and Magnification Ranges

The 1x aiming magnification applies to all kinds of shooting scenarios, which is why this sight is used by so many consumers. Contrary to how it sounds, there is actually no such thing as true 1x magnification. Rather, it simply means unmagnified, which puts the target and the crosshairs on the same plane for easier focusing. There is also nothing for the red dot sight to compete with, making it an easy-to-use scope.

Available Reticles

The 2 MOA red dot reticle helps you see in all kinds of light situations from bright sunlight to the dimmed light of dusk. The adjustment increments are 1.0 MOA, meaning one inch at 100 yards. This makes for a reliable, sturdy field of view that is also nice and wide. The red reticle color means that there is no missing your target.

Field of View

The wide field of view on the Romeo5-1x20mm is great no matter where you mount. Given its 1x magnification, you can rely on that wide field of view for a variety of shooting scenarios whether you are using it for tactical shots or hunting. The 2 MOA red dot size allows for elevation and windage adjustment ranges at +/- 40 MOA. This makes for super-accurate sighting and precision shooting.

Sig Sauer SOR52102 Romeo5 XDR Compact Red Sight 2 MOA Dot with 65MOA Circle
Sig Sauer SOR52102 Romeo5 XDR Compact Red Sight 2 MOA Dot with 65MOA Circle

Eye Relief

The Romeo5-1x20mm has unlimited eye relief, which is what makes it so great for shooters of all abilities and experience levels. Your field of view will not be compromised and that is why you can mount this to any platform — hunting revolvers, scout rifles, and more. Get a bright, crisp picture with the optical accuracy of unlimited eye relief. It does not matter where you place your eye behind the sight; you will acquire your target regardless.

Objective Lens Size

The 20mm objective lens diameter comes with a range of benefits such as low-profile mount and a compact, lightweight feel. It is no wonder that people bring this sight along with them for any of their platforms as it can travel easily and won’t take up much space. Smaller objective lenses such as this are a favorite among military and tactical shooters since the smaller size makes for better camouflage in different light situations. You are less likely to experience glare or reflection on the lens so you can keep your location more secretive.

Tube Diameter

It is common to see 30mm tube diameter on rifle scopes but not so much 38.1mm, such as on the Romeo5-1x20mm. That being said, the tube diameter on this rifle sight does not hold you down in any way. In fact, the width can allow for greater dependability and durability, which can come in handy on all kinds of hunting and shooting expeditions.

Light Transmission

The light transmission on the Romeo5-1x20mm rifle scopes may not be the most amazing on its own but there are the 10 LED illumination settings on the reticle to contend with. There are eight daytime illumination settings and two night vision ones to help with visibility in all light conditions. You may also consider the IPX-7 waterproofing, which allows for up to a meter of water immersion.

Turrets, Parallax Settings, and Adjustments

The MOA adjustments on the Romeo5-1x20mm are 1.0 with total elevation and windage travel at 100 MOA. The ultra-low parallax ensures that you stay relative to the optical axis of sight, making point of aim your point of impact. In other words, the red dot stays parallel to the bore of your firearm even if you change your viewing angle. Again, this is a great feature for shooters of all abilities and shooting styles from tactical to hunting.

SAUER Sig Romeo5 XDR Predator Green Dot Sight 1X20mm Black
SAUER Sig Romeo5 XDR Predator Green Dot Sight 1X20mm Black


To finish up, the Romeo5-1x20mm models come with a (1)CR2032 battery that has a run time of at least 40,000 hours. The MOTAC (Motion Activated Illumination) allows for optimal operation and senses vibrational movement, no matter how slight. This means that when the scope is not in use, it will shut itself off, preserving the battery life. Pick it up and it springs back into action and is ready to go.

The Romeo5-1x20mm’s solid aluminum design feels strong and durable in your hand and easily mounts to any platform, which is what makes it such a wide-ranging option for tactical shooting enthusiasts, hunters, and more. We are also fans of the Spectracoat lens coating, which reduces surface reflections to very low levels across the whole visual spectrum for better sight. Also, the electro-optics stealth ID is Sig Sauer’s signature trapezoidal surface that serves as deflection armor, another prime aspect of this rifle sight.

Rifle Scopes Center Staff

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