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Sig Sauer Romeo 5 Review

Gun Optics SHTF Guns

Sig Sauer Romeo 5 Review

Before we even get started with this Sig Sauer Romeo 5 review, I want to point out that if you aren’t super familiar with optics, you should immediately know that Sig Sauer is an incredibly great and trustworthy brand. I’m going to explain to you why I think that the Sig Sauer Romeo 5 is the best optic out there (price considered).

It is one of the best AR-15 optics I’ve found, hence, why it makes my list. I use it, as you will see below. You can commonly find it for around $150 depending on where you buy it and what deals they may or may not have. Generally speaking, you can find it in Field and Stream, Dicks Sporting Goods, and Bass Pro Shop. I tend to find it for better pricing on Amazon, however.

If you’ve been considering the Sig Romeo 5, get ready, you are about to be impressed.

This is a top-level AR-15 red dot optic. I use it on one of my AR-15 Rifles. Make no mistake about it, this thing gets the job done. The Sig Sauer Romeo 5 is super durable (I will show you that below), features incredibly clear optics, and is nice and subtle perched up on top of your AR-15.

UPDATE: Sig just launched the Romeo 7. Its WAY more expensive, but feel free to check out my Romeo 7 review. (I still prefer Romeo 5, but Romeo 7 is better for hunters in lower light conditions).

Sig Sauer Romeo 5 Review – The Gritty Details

  • It’s a Sig Sauer, so it is homegrown, American made.
  • 2 MOA red dot
  • 10 Illumination settings will allow your shot accuracy to thrive in pretty much any conditions
  • It is motion activated, so when the Romeo 5 senses any motion, it turns itself on.
  • 40k hours of battery life (preppers, if doomsday hits and you stored a decent grip of batteries, you will be good to go for a good stretch)
  • Picatinny enabled, so you can put it on any AR-15 or AR-10.
  • Waterproof. You can submerge it up to 3 feet and maybe a shade more.
  • Fog proof. So no matter what your regional environment consists of, you will be able to see clearly through the Romeo 5.
  • Comes with a low riser mount.
  • Co-witness. This means you can see your iron sites at the same time. This is a huge benefit. If you don’t understand this benefit, check out my AR-15 Optics guide.
  • Made by Sig Sauer who is a reliable, dependable brand.
  • Night vision compatible.

Mine Out Of Box (I even love the box)

sig sauer romeo 5

Like anything you purchase from Sig Sauer, it comes in a clean box that makes you feel pretty good about your purchase.

Its packed tightly. It comes with the battery, a cloth for cleaning the lens, and a low riser mount and high riser mount. The elevated mount will be attached already. If you plan to mount this on a rifle, such as an AR-15, and cowitness, you are set as soon as you remove it from the box.

sig sauer romeo5 red dot

Precision Optic – Sig Sauer Romeo 5 Range Testing

Here are my Sig Sauer Romeo 5 results from an initial sighting in at 20 yards. It was incredibly easy to sight in. I chose not to attempt to just sight it in based on my already sighted in irons because I find the irons difficult to see indoors.

So I went from scratch.

The dot was way off initially, but it took less than 10 minutes to get zero’d in at 20 yards. I tested at 25 yards as well with the same results.

sig sauer romeo 5 holds zero

romeo 5 mounted on AR-15

Here are some more results with added distance. Also, I did NOT brace fully for these shots. I used the Magazine (30 rd) as my rest, which clearly is not a preferred rest gives way to unwanted movement. But I wanted to see what it would do in a more real-world setting whereas you can’t exactly clamp the gun down or bury yourself in a beanbag. The magazine gives some up and down movement, my shots were sailing high, which is a result of my shooting.

You can see the impressive groups though.

Outdoor Range Results – Testing Distance

50 Yards (magazine propped shots)

Magazine rested, still feeling really accurate. The two “off” rounds were just poor shots whereas I forgot to adjust my stock length from collapsed.

sig romeo 5 accuracy 50 yards

100 Yards (magazine propped shots)

Rounds grouping high is a result of magazine rested shots and shooter error. Again, using the magazine as a single rest is not ideal, but you can see, the shots land in vital areas.

sig sauer romeo 5 100 yards

200 Yards (magazine propped shots)

This isn’t a great picture, you can see the mud I’d had to have traversed in order to get closer to it. However, you can see a .223 hold right above the red. I hit the target 1 of 5 tries at 200 yards using only my 30 rd magazine as a rest. I’m not disappointed in the slightest. In terms of real-world application where you might not be given the opportunity to firmly brace, I can’t complain. It’s a small target. Additionally, red dot optics aren’t really for 200-yard shots.

sig sauer romeo 5 200 yards

Red Dot Optic (what you will see)

These were both taken at 200 yards. Clearly, that an exaggerated effect as you wouldn’t typically be using it at such ranges. But hey, how cool is this? The first picture is a result of the lower brightness setting. The second picture is a result of the highest. The higher setting results in a larger dot that covers more of the target.

romeo 5 red dot low brightness

lowest setting – smaller red dot

romeo 5 high brightness

highest setting – larger red dot

The lowest setting means your dog covers that target size’s (used above) red center. That’s amazing, honestly. The highest setting covers a bit more, but not by much. You can easily use the lower setting in daytime conditions. On this particular day, you will notice it is cloudy out.

Sig Sauer Romeo 5 – Deeper Dive

The lightweight design flanked by the Sig Sauer’s incredible durability and clear optics make it a winning choice to perch atop that AR-15. In the end, only the Vortex Sparc Red Dot and Vortex Strikefire 2 can rival it, though both cost a bit more (still economical).

Using the Romeo 5 will completely transform your shooting prowess if you are coming from iron sites. The Romeo 5 holds zero, so once you sight it in, you are good to go unless you drop your AR-15, in which case, you most likely simply need to tighten it back to the Picatinny rails. Made from aircraft grade aluminum, the Romeo 5 is just difficult to truly damage (check out the Romeo 5 torture test below).

The body will seal out water, so Romeo 5 is waterproof, not just “water resistant.” It can handle being submerged up to 3 feet, which is great. You really shouldn’t be dropping it in the ocean anyways, honestly. The battery life claim of 40k by Sig Sauer may be a bit questionable, I’d think more like 2000 hours. When you utilize higher powered illumination, you can expect your CR 2032 battery to drain some. That said, the battery life remains extremely good. And carrying around extra CR 2032 batteries is easy seeing how small they are.

Sig Sauer uses anti-reflection optics which help you see more clearly in lower light scenarios. For hunting, this would be a prime advantage considering you might be in darker areas due to mountains and trees and canopy, or pursuing game in early morning hours.

The lens is also parallax free. So no matter how you point and aim, the target remains the same. With unlimited eye relief, you can quickly obtain a target after picking up your AR-15 or AR-10. The unlimited eye relief means you don’t end up working hard to find the appropriate distance to pick up the red dot and target (all eye distances work). That’s a huge advantage for superior target acquisition.

The 10 diverse illumination settings allow for versatility depending on how much daylight you have exposure to. Obviously, as noted prior, using higher illuminations will clearly take increasing tolls on your battery life.

Sig Sauer gives you a lifetime warranty.

Sig Sauer Romeo 5 Torture Test

To put it to you mildly, the Romeo 5 is a beast. It can take almost any beating you throw at it. From being submerged underwater to being frozen to being dropped, this red dot optic gets back to its feet ready to serve.

The Sig Sauer Romeo 5 is one of the top budget AR-15 optics on the market. It is made by a superior manufacturer, it has proven durability, and you can acquire targets with incredible speed. The housing is fantastic for the price. While there are a few other optics that are competitive at the price, this is the least expensive of them all. You won’t be let down with the Sig Sauer Romeo 5.


Author: Jim Satney

PrepForThat’s Editor and lead writer for political, survival, and weather categories.

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