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Questions & Answers
What mount does this use? Expert Answer

The SIG SAUER ROMEO5X 1x20mm Red Dot Sight is compatible with all Aimpoint T1/Micro mounts and includes a 1.41" and 1.63" mount.

by Ethan, Gear Expert, March 14, 2023
Will this work on deer hunting rifle Expert Answer

The SIG SAUER ROMEO5X 1x20mm Red Dot Sight will mount to any rifle/pistol with a picatinny top rail. It features 1x magnification and a 2 MOA red dot.

by Ethan, Gear Expert, August 26, 2022
Customer Reviews
Helpful Positive Review
My first optic by EmCastle, Verified Owner, October 12, 2022
Now the only reason why I gave 4 stars it’s because this is my first optic. So I’m not familiar to what else is out there but I’ve done plenty of digging into the topic of optics and when I first seen the Romeo 5x it caught my attention simply becaus...
Read More...
3/8 found this helpful
Helpful Positive Review
Sig Romeo5X by Woody, Verified Owner, November 22, 2022
Great little scope. Scope feels and looks to be great quality. Easy to moun, easy to zero. Holds zero great so far. Very impressed with the purchase and the price. Looking forward to getting it out and using it. Thank you
1/2 found this helpful
Helpful Positive Review
twice bought, twice impressed! by Neil Beltz, Verified Owner, April 15, 2023
This lil' scope is so rad! regret selling my first, and am way impressed how fast O.P. got this peeper got into my hands! it takes the 'AAA' battery(included) and is 1:1, keeping that hot dot on site!
1/1 found this helpful
Helpful Positive Review
Best bang for the buck red dot by Benjamin, Verified Owner, September 27, 2022
Very happy with this red dot. More than bright enough for clear day time engagements. Almost no parallax at all. Clean crisp dot. The windage and elevation adjustments have a very tactile click. We'll constructed, no glare. My only complaint is it co...
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9/10 found this helpful
Helpful Negative Review
The 52101 was DOA. RMA same day by AJ-15, Verified Owner, October 7, 2022
Hmmmm.... having recently turned from long time glock fanboy to Sig Sauer fanboy, I thought I'd try Sig Optics. I'm long fan of Vortex, Burris, Trijicon. I received it today, and placed the brand new battery AAA that it came with. No red dot. I t...
Read More...
11/28 found this helpful
Most Recent Reviews
Great Optic by Gun Village, Verified Owner, December 15, 2025
Fantastic sight, clear glass, crisp dot, can see in bright sunlight, shake awake, good hight. Highly recommend
Read All 9 Reviews
Color:
FDE - OP Exclusive
Finish:
Matte
Fabric/Material:
Aluminium
Magnification:
1 x
Objective Lens Diameter:
20 mm
Reticle:
2 MOA Red Dot
Illumination Type:
LED
Illumination Color:
Red
Brightness Settings:
10
Eye Relief:
Unlimited
Adjustment Type:
MOA
Adjustment Click Value:
1 MOA
Emitter Type:
Open
Parallax:
Parallax Free
Lens Material:
Glass
Optical Coating:
HDX
Battery Type:
AAA
Battery Quantity:
1
Battery Life:
40000 hours
Operating Temperature:
-40 - 140 Fahrenheit
Weather Resistance:
Yes
Water Resistance Level:
IPX-7
Water Resistant Mark:
400 m
Shockproof:
Yes
Fogproof:
Yes
Length:
2.47 in, 62.7 mm
Width:
1.5 in, 38.1 mm
Height:
1.52 in, 38.6 mm
Weight:
5.1 oz, 145 g
Additional Features:
2 Night Vision Illumination Settings, 8 Daylight Illumination Settings, MOTAC - Motion Activated Illumination
Included Accessories:
SIG SAUER OPMOD Romeo5 X 1x20mm Compact Reflex Red Dot Sight, 2 MOA Dot Reticle
Condition:
New
Package Type:
Box
Magnification Type:
Fixed
Attachment Type:
Picatinny
W/E Travel at 100 Yds:
100 MOA

Code: SD9-RD-ROM5X-SOR52111-KIT2023

MPN: SOR52111-KIT2023

Product No Longer Available

Product Info for SIG SAUER Romeo5X 1x20mm 2 MOA Red Dot Red Dot Sight

SIG SAUER Romeo5X compact red dot sights provide civilians and armed professionals with a robust 1x aiming solution for any situation. These Red Dot Sights offer ultra-low parallax, so your point-of-aim is the point-of-impact, and the red dot remains parallel to the bore of your firearm, no matter what your viewing angle is relative to the optical axis of the sight. Unlimited eye relief allows you to acquire the aiming point and the target regardless of the position of your eye behind the sight. The readily available AAA battery is side-loading, allowing for quick battery replacement (featuring up to 50,000 hours or more of life). This optic delivers dependable waterproof (IPX-7 rated for complete water immersion up to 1 atmosphere) and fog-proof performance.image

Features of SIG SAUER Romeo5X 1x20mm Red Dot Sight:

  • The Romeo5X/XDR combines leading edge optical design with an extremely robust, lightweight aluminum housing for years of worry free service at a competitive price.
  • Features high performance coatings for excellent light transmittance and extended runtime.
  • Romeo5X comes with a 2 MOA dot while the Romeo5XDR can be toggled between a 2 MOA dot or a 65 MOA circle dot reticle.
  • Features MOTAC™ (Motion Activated Illumination), powers up when it senses motion and powers down when it does not, enhancing battery life
  • Runs off a single AAA battery for up to 50,000 hours of runtime under normal use.
  • Modular M1913 Picatinny riser mount for 1.41” (absolute cowitness) or 1.63” (1/3 lower co-witness) sight heights.
  • Dependable IPX7 waterproof performance.
  • Covered by SIG SAUER’s INFINITE Guarantee™ and Electronics Limited Warranty, see website for full details.

Package Contents:

  • SIG SAUER Romeo5X 1x20mm Red Dot Sight

Red Dot Accessories

160 / 60
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Red Dot Sight Magnifier

119 / 19
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Related Products to SIG SAUER Romeo5X 1x20mm 2 MOA Red Dot Red Dot Sight

SIG SAUER Romeo5X 1x20mm 2 MOA Red Dot Red Dot Sight Unavailable & Discontinued Models

List of Unorderable Models

  • SIG SAUER OPMOD Romeo5 X 1x20mm Compact Reflex Red Dot Sight, 2 MOA Dot Reticle, Flat Dark Earth SOR52111 , MPN: SOR52111-KIT2023 , Code: SD9-RD-ROM5X-SOR52111-KIT2023
  • USED SIG SAUER Romeo5 1x20 mm Red Dot Sight, 2 MOA Red Dot Reticle, 1 x AAA Battery, Matte, Black, SOR52101, EDEMO11, Condition Fair, Other , MPN: SOR52101-EDEMO11 , Code: SD9-RD-ROM5X-SOR52101-EDEMO-OT-D
  • DEMO, SIG SAUER Romeo5 1x20mm Red Dot Sight, 2 MOA Red Dot Reticle, 1 x AAA Battery, Matte, Black, SOR52101 , MPN: SOR52101-DEMO , Code: SD9-RD-ROM5X-SOR52101-DEMO
  • SIG SAUER Romeo5 1x20 mm Red Dot Sight, 2 MOA Red Dot Reticle, 1 x AAA Battery, Matte, Black, SOR52101 , MPN: SOR52101 , UPC: 798681576821 , Code: SD9-RD-ROM5X-SOR52101
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