Building America’s Largest Online Gun Deals Platform. Start Your Search Today! clean search
  1. Home
  2. Reviews
  3. Optics & Scopes
  4. Sig Sauer ROMEO5 & JULIET3 Review: A Perfect Optic Match
Sig Sauer ROMEO5 & JULIET3 Review: A Perfect Optic Match preview image
Aug 02 2023
7 min read

Sig Sauer ROMEO5 & JULIET3 Review: A Perfect Optic Match


One of our favorite budget red dots is and has been the Sig Sauer ROMEO5. Despite the low price point, you still get some great features, such as motion-activated illumination (MOTAC), night vision compatible brightness settings, and an IPX-7 waterproof rating.

But sometimes, you need more than a 1x magnification to practice taking out those zombie targets at 200 yards. That’s where the JULIET3 3x magnifier comes in. With a simple flip of the PowerCam 90° mount, you can instantly transition from close-quarters shooting to medium-range shooting.

Instead of having to buy the two separately, you can get the ROMEO5 and JULIET3 in a convenient combo pack. Let’s take a closer look at this fantastic optic match.

sig sauer romeo 5 juliet3 red dot magnifier review
The ROMEO5 and JULIET3, fresh out of the box, had no scuffs or blemishes to their finishes.

Sig ROMEO5 & JULIET3 Review

romeo 5 juliet 3 combo

ROMEO5 Specifications

Reticle2 MOA dot
Reticle ColorRed
Objective Lens Diameter20 mm
Weight5.1 ounces
Run Time40,000 hours
Illumination Settings8 daytime/2 night vision

JULIET3 Specifications

Objective Lens Diameter24mm
Weight12.5 ounces

Pros & Cons

  • ROMEO5 has MOTAC (motion-activated illumination)
  • ROMEO5 has an impressive 40,000-hour battery life
  • Both the ROMEO5 and JULIET3 are waterproof rated
  • Both the ROMEO5 and JULIET3 are reliable and durable
  • Affordable all-in-one combo package
  • Backed by Sig’s Electro-Optic Infinite Guarantee
  • Side loading battery (ROMEO5)
  • ROMEO5 only has one reticle option – a 2 MOA dot
  • Mount for the ROMEO5 feels cheap and is made of plastic

Range Time: Reliable and Accurate


Between two AR-15s, the ROMEO5 and JULIET3 combo helped send roughly 600 rounds down range. Once zeroed on either rifle, there was no need to re-adjust.

The ROMEO5 was dropped, submerged in water, and dropped into the water without having any issues afterward. No lens fog, no water intrusion, and no dimming of the reticle.


Accuracy is the name of the game with optics. The ROMEO5’s 2 MOA dot is a great size for more precision type shooting. Once paired with the JULIET3’s 3x magnification, you wind up with a capable setup that should be good to roughly 300 yards or more, depending on your eyesight and skill level. While I didn’t have a 300-yard range to shoot on, I had no issues within 100 yards.

sig sauer romeo 5 juliet3 red dot magnifier review at outdoor range
Seeing how well they pair together, the Romeo & Juliet name fits perfectly.


MOTAC (Motion Activated Illumination)

As it says above, the ROMEO5 turns on automatically at the first sense of movement. Anytime I picked up my rifle, it was always on by the time I went to look down range.

You can also disable the MOTAC feature by pressing and holding both buttons for three seconds. To turn it back on, you probably guessed it…press and hold both buttons for three seconds.

I typically keep it on, as it will conserve battery by powering the optic down after a set period of inactivity.


Both the ROMEO and JULIET are waterproof rated. The JULIET is IPX-8 rated, while the ROMEO is IPX-7 rated. That means the JULIET should be waterproof down to 20 meters for one hour, and the ROMEO should be waterproof completely down to 1 meter for 30 minutes.

Yes, that’s a Tupperware container filled with water. I used what I had close by to ensure the optic would perform at least after being completely submerged for several minutes.

sig sauer romeo 5 water torture test
It’s not very deep, but being fully submerged was no issue for the ROMEO.

As you probably guessed, it worked perfectly after taking a quick bath.

Night Vision Compatible

With eight daylight settings and two night vision settings, you shouldn’t have issues under any light conditions. I didn’t have any night vision to test with for the review, but all the daylight settings worked great.

I found that one of the middle settings was suitable for most situations outside of direct sunlight with light backgrounds.

The buttons to adjust the brightness are located on the optic’s top and are easy to manipulate. With gloves on, they can be a bit difficult, but doable, to press since they are so close to being flush.

sig sauer romeo 5 controls
The simple controls are very user-friendly.

Quick Release Mount

Can’t find any of your tools in your range bag? No problem. The quick-release mount saves the day and lets you quickly and easily remove the JULIET3. It stays surprisingly snug when attached, despite being easy to remove.  

sig sauer romeo 5 juliet3 close up
The JULIET3 takes all of about a couple of seconds to remove from your rail.

Side Loading Battery

When it comes to optics, no one wants to have to remove them from their firearms to change the battery. Thankfully, with the ROMEO5, you won’t have to. You can easily change the battery via the side-loading battery compartment.

sig sauer romeo 5 outside
The tail end of a spent casing works great for tightening or loosening the battery cap.

Score Card

Reliability (10/10)

After throwing it around, submerging it in water, and putting several hundred rounds down range on an AR, it’s still chugging along like it did out of the box.

Appearance (8/10)

It’s nice and compact, but the riser mount is pretty plain Jane.

Value (9/10)

You can typically find the combo well under MSRP, which is when the value is a 9/10.


Holosun AEMS & HM3XT Combo

Holosun AEMS & HM3XT Combo

Holosun has been delivering some of the most innovative optics and accessories on the market lately, with some excellent features such as Solar Failsafe (solar charging) and MRS (multi-reticle system).  

The AEMS (see our AEMS review here) has both features plus Shake Awake technology that helps extend your battery life. To top it off, it’s night vision compatible, has a side-mounted battery tray, and has flip-down lens covers.

holosun aems green dot view

Pairing well with the AEMS is Holosun’s HM3XT magnifier. It’s a 3x magnifier with a quick-release rail mount, a generous 2.75-inch eye relief, and is IP67 certified for water resistance.

The combo will cost you slightly more than the ROMEO5 and JULIET3, but you also get additional features to justify the cost.

EOTech EXPS3 & G33 Magnifier

EOTech EXPS3 & G33 Magnifier

This one is going to cost you…a lot. However, there are plenty of features to help justify the price.

The EXPS3 (see our EOTech EXPS3 review here) delivers a true two eyes open shooting experience. Its 68 MOA ring and 1 MOA dot combination reticle allow high-speed target acquisition. You’ll get 20 daylight and ten night vision settings, with up to 1,000 hours of battery life.

eotech close up exps3 with controls

With the G33 magnifier, you can transition from 1x to 3x with a simple flip. It’s sealed for water resistance, fog resistance and is built to withstand temperatures between -40°F and 140°F.


Whether you’re on a budget or not and looking for a red dot/magnifier combo, the Sig Sauer ROMEO5 and JULIET3 is an excellent option. It delivers a quality mix of close quarters and medium-range capabilities, with enough features to suit most of your needs. You can always buy them separately if you want to try out the ROMEO5 before making the investment to grab both.

What are your thoughts on the ROMEO5 and JULIET3, separately or together? Let us know what you think in the comments below!

Written by Ryan Domke
Ryan Domke photo Ryan Domke is a freelance writer, photographer, and social media consultant with a passion for guns and tactical gear. He works with some of the largest manufacturers in the firearms industry, allowing him the opportunity to continuously learn from and knowledge share with the 2A community. Ryan has contributed his writing expertise to numerous reputable publications, including, Cheaper Than Dirt, Springfield Armory's 'The Armory Life,' Smith & Wesson's 'The S&W Bench', and The Mag Shack. When he’s not spending time with his family, you’ll likely find him at the range or starting a new DIY project.


Your email address will not be published. Required fields are marked *

Explore more