Sig Sauer – Romeo MSR vs. Sig Sauer Romeo 5 – Which one is the better scope?

Sig Sauer - Romeo MSR vs. Sig Sauer Romeo 5

Sig Sauer devices are many and diverse, and they are made to perform in different settings. Both the Sig Sauer – Romeo MSR and the Sig Sauer – Romeo 5 are considered quite small, and they make great scopes for mid-range shooting.

The scope market is largely dominated by multiple giants who manufacture all sorts of devices that are ideal for short, medium and even long ranges. Sig Sauer happens to be one of these manufacturers, and the Romeo range is one of their most popular, especially for recreational shooters. The Sig Sauer – Romeo MSR and the Sig Sauer – Romeo 5 are ideal for both short and mid-range shooting, and they have a couple of similarities. So, what is it that sets them apart?

What are the differences between Sig Sauer – Romeo MSR and the Sig Sauer Romeo 5?

Sig Sauer – Romeo MSR
Sig Sauer – Romeo 5
3.1 inches
3.03 inches
Mounting Type
MIL-STD 1913
Multi-height mounting
Dot Color
Bright red
Bright red
Battery Life
Up to 20,000 hours
Up to 40,000 hours

Sig Sauer – Romeo MSR vs. Sig Sauer – Romeo 5 – How do they compare?

Optic features and Characteristics

The Sig Sauer – Romeo MSR is a riflescope that is made using high quality glass that is multi-layered to reduce on the amount of reflected light which could potentially distort your line of vision. Its objective lens has a thickness of 20 mm and it also provides a 20mm window size. For high image accuracy, it is a non-parallax device, and it is also made to support unlimited eye relief which ensures the target remains clear no matter where the scope is installed on the rifle or shotgun.

Similarly, the Sig Sauer – Romeo 5 is made using high quality multi-layered glass for the purpose of reducing on the amount of reflected light, particularly within your line of vision. Also boasting a 20mm diameter, this riflescope is ideal for short and medium range shooting. It is a non-parallax device that enhances the accuracy of your vision. You will also be able to acquire and maintain target with ease owing to its unlimited eye relief.

Both of these devices share similar optic characteristics, setting them on equal footing in this regard.  

Overall Performance

In addition to having a 20mm objective lens diameter, the Sig Sauer – Romeo MSR boasts a 2 MOA red dot size. This makes it ideal for ranges that span up to 100 yards even though it can still cover a slightly longer distance. For ideal brightness settings in the outdoors, you will gain access to 10 brightness adjustment levels for daytime use. In addition, you will have two adjustment settings that are compatible with night mode, making certain that you enjoy a good level of brightness both in the day and during the night.

Similarly, the Sig Sauer – Romeo 5 presents a 2 MOA red dot size that is ideal for a 100 yard range. Just like its counterpart, it can also cover a longer distance but not by much. However, unlike the Sig Sauer – Romeo MSR, this scope comes with a total of 10 brightness adjustment levels, 10 for daytime and 2 for night time. These last two levels make sure that you can keep going even when the light is gone.

The Sig Sauer – Romeo MSR outdoes the Sig Sauer – Romeo 5 since it comes with a total of 12 brightness adjustment levels, two more than the latter.  


For an incredibly hardy body, the Sig Sauer – Romeo MSR is made using aircraft grade aluminum. This makes it extremely hardy and give it the ability to handle strong impact without shattering. In addition, it is made to withstand many rounds of recoil with poise and grace. More importantly, though, it I fitted with O-rings which make certain that the scope stays fully water and dust proof, even in extremely wet and dusty conditions. Moreover, it is nitrogen flushed to keep it from fogging from the inside, maintaining good clarity all through.

The Sig Sauer – Romeo 5 follows suit in similar fashion, spotting an aircraft grade aluminum outer casing.with this material, the scope can handle a good amount of impact without flinching and without losing its integrity. It also handles recoil like a champ, keeping the lens from shattering from round after round of impact. Additionally, it is made to be water and dustproof, and the fact that it is nitrogen-flushed adds to its ability to keep fog from forming from the inside for guaranteed clarity.

Both of these devices are created to handle heavy impact, to be water and dust proof and to keep fog from forming internally, making them similar where construction is concerned.  

Battery Life

Often times, we go for scopes that promise longevity where battery life is concerned. With the Sig Sauer – Romeo MSR, you will be in a position to enjoy up to 20,000 hours of battery life. This duration of time is, however, affected by the brightness settings, with the brightest levels causing the battery to drain faster.

The Sig Sauer – Romeo 5 changes the game when it comes to battery life, boasting a duration of up to 40,000 hours. This is twice as long as its counterpart’s. in similar regard, higher brightness settings reduce this battery life significantly.

The Sig Sauer – Romeo 5 floors the Sig Sauer – Romeo MSR where battery life is concerned, making it the better scope.  

Sig Sauer – Romeo MSR vs. Sig Sauer – Romeo 5 – A comparison Overview

Sig Sauer – Romeo MSR Overview

What stands out the most about this scope is its lengthy body that is quite slender. Its 20mm objective lens diameter makes it an ideal device for mid-range and shot range shooting. Its 2 MOA red dot size allows it to cover a length of up to 100 yards with ease.

With up to 10 daylight brightness adjustment levels and 2 nighttime brightness settings, this device makes certain that you do not have to g on beak if you have no desire to. All you have to do is change the settings and you are good to go.

The casing is made to be strong and hardy, boasting air craft grade aluminum. This feature allows it to handle impact and recoil with ease and keeps it from shattering. Additionally, it is a waterproof and dustproof scope that is also nitrogen-flushed. This characteristic keeps it from developing fog internally. This scope comes with a 20,000 hours battery.


  • Small and light
  • 2 MOA red dot for short and middle ranges
  • Comes with night mode
  • Water, dust ang fog proof


  • Has a short battery life

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Sig Sauer – Romeo 5 Overview

Sig Sauer SOR52001 Romeo5 1x20mm Compact 2 Moa Red Dot Sight, Black
  • 2 MOA Red-Dot provides 10 illumination settings (8 daylight plus 2 NV) for visibility in all light...
  • MOTAC (Motion Activated Illumination) powers up when it senses motion and powers down when it does not....
  • Integrated M1913 Picatinny interface provides industry-standard mounting options for a wide range of...
  • Dependable waterproof (IPX-7 rated for complete water immersion up to 1 meter) and fog-proof performance

This riflescope combines a small stature and light weight to make it an ideal scope for all firearm sizes.With a 20mm objective lens and 2 MOA red dot size, this device makes an ideal scope for medium range shooting.

The Sig Sauer – Romeo 5 offers up to 10 brightness adjustment levels, making certain that you enjoy clarity all through. Two of these settings support night mode to ensure that you can hunt round the clock.

Since this device was created to be hardy, it is constructed using aircraft grade aluminum which gives it the capacity to withstand heavy impact and to handle recoil with grace. Additionally, it is waterproof, dustproof and fog proof for clarity all through. it boasts a battery life of 40,000 hours.


  • Water, dust and fog proof
  • Ideal for middle to short ranges
  • Has a long battery life
  • Strong and hardy


  • Not ideal for long ranges

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Verdict: So, which one is better – Sig Sauer – Romeo MSR or Sig Sauer – Romeo 5?

Both these riflescopes boast near similar characteristics, but the Sig Sauer – Romeo 5 comes with twice as much battery life than the Sig Sauer – Romeo MSR. This characteristic places it above its counterpart.


  1. What battery type does the Sig Sauer – Romeo MSR come with?

It comes with a CR1632 battery.

  1. Is there a low mount for the Sig Sauer – Romeo MSR?

Yes, there is.


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