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SIG SAUER Romeo4A 1X20 Low .5MOA
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Most Helpful Positive Review Nice Red Dot, but align the Circle!
I bought this Red Dot for my Wife's WindhamWeaponry WW-CF 5.50 NATO. First sight of ANY kind that I mounted on anything and had it shoot DeadNuts Center at 100 yards on the 1st Shot!. Switched the Reticle from Dot to Circle Dot and was flabbergasted that the posts extending out from the Circle were ...
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Most Helpful Negative Review Not much luck so far
The first one I received was defective and the second was someone else's return. The pieces in the box we're not packaged correctly and the outside was taped up. The optic I have now works and seems well made, it's just disappointing coming from optics planet.
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Great sight

by TXBBQ420, Verified Owner from TX, United States Written on June 19, 2018
This is my 2nd Sig Sauer red dot sight. I was impressed with the price/quality of my Romeo 5 and decided to try another. The rail on my M1A CQB is forwardly placed And the eye relief on this sight matches it well. Accurate enough out of the box. With the low mount it has a sleek modern look. With the supplied tall mount, not so much.
Pros:
  • Price
  • Weight
Cons:
  • Clunky looking tall mount
Would recommend: Yes
1 of 1 found the following review helpful.
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Sig Romeo 4A

by Shreck, from PA, United States Written on April 18, 2018
Works as advertised couldn’t be happier, I’ve used several red dots for fun and work this is top of the line and the price is right don’t pass this up you won’t be disappointed, sight is on a 300 blackout
Would recommend: Yes
Was it helpful to you? Yes | No

great red dot

by m., from WA, United States Written on March 11, 2018
It's a fantastic red dot, especially if you need to get a really low profile, like on a RS Regulate mount. It has some limitations, and if you have the money, get a newer model like the 4h, but it's still an incredible deal at it's price point
Pros:
  • rugged, durable, holds zero, looks good, and cheap in price
Cons:
  • there are newer versions
Best Used for:
  • home defense, hunting, shtf
Would recommend: Yes
1 of 1 found the following review helpful.
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I should of bought 2

by AndyA2010, from OH, United States Written on July 3, 2017
I bought this red dot at 50 percent off last year and sold it with my Ar15 to a buddy of mine. Long story short we were hitting .5 inch groups at 300 yards with this. Yes you heard that correctly. I would say the max range for this red dot is 350 yards depending on the size of your target. We were hitting a12x12 steel target.
Would recommend: Yes
2 of 5 found the following review helpful.
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Sig Romeo 4A

by Vpgene, Verified Owner from VA, United States Written on May 25, 2017
purchased this red dot over a month. I put it on my BCM SBR and it works great. Zeroed it for 50 yards and ran about 400 rounds through it. Awesome red dot so far. I would recommend to friends and family.
Would recommend: Yes
2 of 3 found the following review helpful.
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Excellent Red Dot!

by Cachman, Verified Owner from CA, United States Written on August 2, 2016
This is a great Red Dot optic for my Sig Sauer MCX 5.56 Carbine. The glass is clear and crisp. The Red Dot feels very durable and dials are easy to manage. Sig Sauer did a really great job with this Red Dot.
Pros:
  • Durable.
  • Light weight.
  • Quality workmanship
Cons:
  • None
Would recommend: Yes
4 of 4 found the following review helpful.
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Last updated 2025-11-12 UTC.