Sig Sauer ROMEO 5 Review [+Pics]

In this Sig Romeo 5 wreview, we will evaluate the features, performance, and overall value of the Sig Sauer Romeo 5 (SOR52001)

The Sig Sauer Romeo 5 is a compact red dot sight suitable for use on a variety of firearms. It offers a durable aluminum housing, a 2 MOA dot reticle, and multiple brightness settings. The Romeo 5 is also water, fog, and shock resistant. 

Let's check it out

Sig Sauer Romeo 5 Specs

  • Magnification - 1X
  • Reticle - 2 MOA Dot
  • Adjustment - 0.5 MOA / Click
  • Brightness - 8 DL&2 NV (Features MOTAC motion activated illumination )
  • Battery - CR2032, 40000 hours with motion activation
  • Lens Coating - Fog proof
  • Construction - 6061 T6 housing + Anodized
  • Submersion - IPX7
  • Body Dimension - 62.7mm X 38.1mm X 38.6mm
  • Window Size - 1X20mm
  • Weight - 5.1 oz
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Unboxing Sig Romeo 5

Sig Sauer did a 10/10 job packaging this product in a box like this:

It just feels like buying a $600 product. 

sig romeo5 packaging
sig romeo 5 box
sig sauer romeo 5 unboxing

You get:

  • Sig ROMEO 5
  • Manual
  • Rubber lens cover
  • Absolute cowitness mount & tall mount
  • Cleaning cloth
  • 1 CR2032 battery
  • Allen key

First Impression

sig sauer romeo5 front

Very clear front lens and good overall presentation

sig sauer romeo5 iso view

The Sig Sauer ROMEO 5 is small and lightweight! The construction of the optic looks slick and the edgy cuts make the sight feels very true to the Sig Sauer's brand.

The turrets feel solid, the lens looks clear just like any other reflex sights, and based on the specs, the ROMEO 5 can accept Aimpoint Micro mount, so see what that looks like.

Main Sig ROMEO 5 Features

Window Size

The 1X20mm objective lens look similar to an Aimpoint Micro and other budget options.

sig sauer romeo5 rear pov
romeo5 pov red dot reticle on steel target

No noticeable lens tint. Thumbs up!

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sig romeo 5 pov rain

In rain, just crank up the brightness intensity and you're good to go under a cloudy day.

The Sig ROMEO 5 features a simple 2 MOA center dot

The 2 MOA dot is pretty standard for most red dots this size for close target acquisition.

At 100 yards, once the dot is zeroed, the 2 MOA red dot covers about 2" circle and it's just as accurate as an Aimpoint Micro (assume proper mount & zero).

Red Dot Sight MOA Sizes

For shooters with astigmatism, the optic has 8 day light settings and 2 night vision settings to help you adjust the reticle brightness and clarity.

shooters with astigmatism see this

Based on years of experience, the only way to counter astigmatism with an reflex sight is to wear corrected lens and go with a 6 MOA dot (recommended for pistol red dot for the most part)

For cross eye dominant shooters, the only thing the shooter can do is train to aim with the eye on his/her the dominant side. Read more by clicking on the link.

Reticle Brightness Settings

Under a hot sunny day, the Sig Romeo 5 reticle is visible on max daylight setting.

On a cloudy day, the reticle appears starbursted if the brightness is cranked up too high (recommend cranking it back down until it's right for you)

Battery Life

sig romeo 5 with battery CR2032

The Sig Romeo 5 battery life is about 40K hours on a single CR2032 battery, and the battery compartment can be accessed from the side like an Aimpoint Micro. 

The optic at the point of writing this review has already lasted 3 years without dying. Not to mention that it's off when sitting idle, which saved lot of battery juice. 

sig motac

In addition, the optic features Sig Sauer's MOTAC system that saves the battery juice while it sits idle, and reactivates when it senses motion. 

So far, the optic has always stayed operational even after multiple range trips throughout the last two years. 

Sig Romeo 5 Construction

sig sauer romeo5 top view
sig romeo 5 in rain
sig sauer romeo5 on mk18

The body of the Sig ROMEO 5 just look slick. Just look at that!

sig romeo5 on scalarworks leap mount

The body is made of 6061 T6 aerospace aluminum, and it's durable for normal use on carbines and PCC.

As far as holding zero goes, the sight holds zero under normal use. So far it has not lost zero whatsoever.

As red dot manufacturing technology has advanced in the past few years, more and more optics can perform like some of those expensive ones, and the price keeps dropping as demand increases.

For new and experienced, the Sig ROMEO 5 red dot is a solid product to buy at a great price point.

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Turret Adjustment

sig sauer romeo5 red dot top view

0.5 MOA / Click is what you get with this red dot sight, and it's pretty standard for 2 MOA red dot across the board.

The Sig Sauer ROMEO 5 provides plenty of adjustment click range (100 MOA for elevation and 100 MOA for windage). On a normal optic to bore distance gun, there is plenty of elevation dials to zero the dot before the turret dial maxes out.

The elevation and windage turrets are exposed without any extrusion wings around it to protect it. It's not a big deal for an optic at this price range, and the part we like a lot is that the turrets are very responsive, and it gives very positive feedback even when wearing gloves in the cold.

The turret cap has built in flat head extrusion to dial the optic, and it's labeled Up/Right to reference the point of impact shift

(NOT reticle point of aim

If you've ever experienced reticle moving opposite of turret dial, we wrote an detailed article explaining to help you out.

If you're new to red dot sight, check out this guide on our site that breaks down everything you need to know about a red dot optic.


sig sauer romeo5 vs aimpoint micro
sig romeo 5 footprint

Does SIG Romeo 5 red dot sight come with low mount?

Yes! the package comes with a low mount.

Will Sig Romeo 5 fit on Aimpoint Micro T1 mount?

Yes! The Sig Romeo 5 fits any aftermarket Aimpoint T1, T2, H1 or H2 mounts. As well as riser mounts

Our favorite one is the Scalarworks LEAP. Please check out our review on this mount.

It's lightweight and slick looking for the Sig ROMEO 5.

sig romeo5 mount footprint
scalarworks leap mount unpackaging
kriss vector SMG sig sauer romeo 5 red dot sight

Features the SCALARWORKS LEAP NVG height (1.93") mount (Optimal cheekweld height) 

sig romeo 5 on cz evo with magnifier

Works with magnifier combo. Above features the Vortex Micro 3X, read our review here

Sig Romeo 5 Review Verdict

If you're in the market for an affordable red dot sight, the Sig Sauer ROMEO 5 is a great option to consider. It's an excellent choice for both beginner and experienced shooters, and it's well-suited for both training and live fire use.

At a price of around $170 (or even less on Amazon), it's an excellent value for the price. If you want to see more red dot sight options, check out our comprehensive red dot sight guide.


  • Very solid entry level red dot product under $150
  • Super lightweight for centerfire and pistol caliber carbines
  • MOTAC saves battery juice
  • Works with all aftermarket Aimpoint Micro mounts


  • Not much for its price range
  • No lens cap
  • No night vision settings