SIG SAUER ROMEO5 GEN I & GEN II 2 MOA Dot Sight - 1x20mm Compact Durable IPX-7 Waterproof Shooting Rifle Sight with Parallax-Free Optical Design & 12 Illumination Settings
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Availability:
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Arrives
Monday, Jul 6
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Style: GEN II Red Dot Sight - Black (SOR5101)
Features
- ROMEO5 GEN II - The ROMEO5 GEN II red dot sight represents the next step in the evolution of SIG SAUER's best-selling Electro-Optics series, now refreshed with a bold new design & enhanced functionality; This high-performance 1x aiming sight is designed to meet the rigorous demands of civilians and armed professionals alike
- NEXT-GEN PERFORMANCE - This compact red dot sight features ambidextrous top-mounted illumination controls, allowing users to easily adjust brightness levels for any situation; Featuring 10 daylight and 2 NV settings, this red dot sight ensures you have the perfect level of illumination for precise targeting in diverse environments
- UNMATCHED CLARITY - Engineered with a fully multi-coated lens that enhances light transmission, this red dot sight delivers clear sight pictures even in challenging lighting conditions; Thanks to the parallax-free optical design, the point of aim remains consistent regardless of eye position, providing unparalleled accuracy and confidence in every shot
- DURABLE CONSTRUCTION - Built to withstand harsh conditions, the optic's IPX7 rating offers dependable waterproof and fog-proof performance, ensuring reliability in any weather or situation; The rugged industrial design is further enhanced by a new I-BEAM mount that maximizes situational awareness, delivering a stable and secure platform for your red dot sight
- INCREASED BATTERY LIFE - The ROMEO5 GEN II shooting sight provides a 1x enclosed aiming solution for todays carbine platforms, with a crisp 2 MOA red dot emitter powered by a single battery that can be quickly replaced; Coupled with SIG SAUER'S motion-activated MOTAC technology, this dot sight boasts an industry-leading 40,000-hour runtime under normal use; MOTAC immediately powers up illumination when it senses motion and powers down when it does not in order to extend battery life
Brand: Sig Sauer
Color: Black
Style: GEN II Red Dot Sight - Black (SOR5101)
Sport: Hunting
Item Weight: 0.62 Pounds
Material: Metal
Magnification Maximum: 1 x
Objective Lens Diameter: 20 Millimeters
Magnification Minimum: 1 x
Compatible Devices: Handgun
Magnification Maximum: 1 x
Objective Lens Diameter: 20 Millimeters
Magnification Minimum: 1 x
Compatible Devices: Handgun
Mounting Type: Picatinny Mount
Night vision: Yes
Reticle Type: dot
Item Weight: 0.62 Pounds
Color: Black
Product Style: GEN II Red Dot Sight - Black (SOR5101)
Lens Color: Red
Material Type: Metal
Brand Name: Sig Sauer
Sport Type: Hunting
Model Name: ROMEO5 Gen II
Manufacturer: Sig Sauer
UPC: 798681694600
Global Trade Identification Number: 00
Model Number: SOR5101
Manufacturer Part Number: SOR5101
Unit Count: 1.0 Count
Included Components: SIG SAUER ROMEO5 Gen 2 1x20mm Reflex Red Dot Sight
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Jul 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Style: GEN I Red Dot Sight - Black (SOR52001)
I received this in the factory sealed box, and with the factory tamper proof seal in tact! The sight came boxed with the, Mounting key, Lens cloth, Battery, 2 mounts, lens cap, Instruction Sheet. This is a very nice sight, easy to mount, clear optics. Clearing up the misinformation about this sight. A few things that's important to know about the optic! (1) Read over the instruction sheet, don't just think you've had these types of sights before and you know how this one works and end up leaving bad reviews. (2) Yes! the sight has an auto off after 120 seconds of "No Motion" and auto motion ON so, yes if it stored in a vehicle the motion of it will keep the red dot illuminated and cause an unnecessary battery drain. If you've read the instruction sheet it informs you that the sight also an actual Power Off and Power On option, to use this option you only have to hold down on either the + or - button longer than 1 second, and the same thing to power it back on. (3) reports of the sight not working in MOST cases is caused from one of couple of things, when you first install the battery you will not be able to see the red dot until you turn up the brightness, so click the + button (Don't Hold It Down At First, Just Click It) 3 or 4 times if you still don't see the dot assume the sight is in its Powered Off Mode and push and hold either the + or the - button for 1-Second to actually turn the sight on, then click the + (plus) button a few times until the dot becomes bright enough to see. (4) Another possible problem that could happen is with installing the battery, mine had a safety peel off sticker that HAS to be removed, well due to certain conditions when you peel these off it leaves adhesive (glue) on the battery so its possible to leave enough as to cause a loss of battery contact. Make sure when you peel the sticker off from the battery that all the adhesive is cleaned off of the battery itself. _______________________________________________________________________ !Caution! the brightness adjustments in either direction ISN'T A PUSH & HOLD operation!!!!! its momentary CLICKS! That means that the brightness setting isn't a constant veritable, its in CLICKED STEPS! !Caution! holding down for more than one second on either the Plus or the Minus button actually turns the optic sight OFF (totally powering it down) meaning that just clicking the brightness buttons (Plus or Minus) will not do anything until the optic sight is "Turned Back On" Bottom line on the misinformation of this optic, its has some higher level electronics then the standard red dots, its not rocket science to understand, but its cause for a lot of these being returned and the reason for a lot of the low rated reviews. Its NOT only "Auto Powered Controlled" it can be Turned Off, and it can be done so by accident. PLEASE read over the instruction sheet FIRST before you box this sight up and return it, its quality enough to deserve that much attention. Bottom line on the optic sight itself. Let me make this clear! This review is from a 64 year old AR-15 (5.56 NATO) gun owner!! The sight responded well to adjustments! Seems to be holding ZERO very well with what ammo I've fired so far! It has very clear optics! Having the turret adjusting bits built onto the turret caps works very well! There is no issues with the quality or function of this sight that I can find, but I'm thinking that the same sight upgraded to the larger tube and lenses might be NICE! but it would be larger and it cost more! Very Nice for the money!
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Reviewed in the United States on October 13, 2021 by Mark W.
Style: GEN I Red Dot Sight - Black (SOR52001)
Dot brightness very good. Easy to mount. (2) available pic rail mounts are included for height preference. Easy to zero. Comes with battery, mounting/adjustment tool, lens cloth and bikini-style lens cover. This version looks better than the newer models (in my opinion). Generally a great red dot. I'll get another one soon.
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Reviewed in the United States on May 24, 2026 by 3488912
Style: GEN II Red Dot Sight - Black (SOR5101)
I have this on my mossberg 590r, DB-15, and gforce jawbone. Shot 5,000+ rounds through it and had ZERO issues. Holds zero, can see red dot at night, sundown, whatever the case is. Absolutely worth it especially on this price point. Looks great as well. Battery life is great too, haven’t had to change it yet.
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Reviewed in the United States on June 2, 2026 by Nick
Style: GEN I Red Dot Sight - Black (SOR52001)
The SIG SAUER Romeo5 1X20mm Red Dot Sight has exceeded my expectations. The red dot is crisp, clear, and easy to pick up quickly, which makes target acquisition fast and effortless. The brightness settings are easy to adjust and work well in both bright daylight and low-light conditions. The build quality feels extremely durable. It’s solid, waterproof, and fogproof, so it holds up well in different environments without any issues. The included Picatinny mount made installation simple, and once mounted, it stays secure with no movement. Battery life has been excellent, and the motion-activated feature is a great bonus. It turns on when needed and helps conserve power. Overall, this is a dependable, high-quality optic that performs exactly as advertised. Definitely worth it.
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Reviewed in the United States on February 21, 2026 by Dale
Style: GEN I Red Dot Sight - Black (SOR52001)
So I actually bought this a few years ago. I put it on my duty AR. I really didn’t use it except once a year to qualify at the range. I keep the cover on to keep the glass from getting scratched. Recently I bought a new gun and it came with no sights. I took the riser off of this and placed it on that gun to try it out. The battery even after being in my car all this time is fine. After adjusting for windage and elevation it worked great on my new 10/22 charger. Playing with the adjustments was not too difficult after getting the caps off. Put the dot where you want the bullet to go and it was dead on even if I looked at it through weird angles. I normally use iron sights but this convinced me to re-think that. I am considering putting this in my 22/45 next. Sight acquisition is faster the more you use it. Long battery life. Ease of use and it has both the riser and low mount so can work with pistol or rifle. The price is right and even on low settings works outside in the sun. Better than night sights in the house for home defense and you can shoot with both eyes open. It’s durable. I had this mounted and banged around in my patrol car a lot. It still looks like new. And it functions flawlessly. I will say this. It is designed by Sig Sauer but says right on the body of it made in china. Still what works, works.
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Reviewed in the United States on March 13, 2024 by Miles Juelfs
Style: GEN II Green Dot Sight - Black (SOR5102)
I have it on an S&W 9m PPC that folds, which means it's sitting further away than I'd like. I'm also comparing it to an Aimpoint T2. I find red to be easier to see without eye correction than green. So with those three things going against it, it holds up OK to about 100 yards and then it's just too blurry to be useful. But that's probably my limitations kicking in first. And for what I'm using it for, it's really just about right.
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Reviewed in the United States on April 14, 2026 by M. Vandergrift
Style: GEN II Red Dot Sight - Black (SOR5101)
The SIG Romeo5 Gen 2 is an excellent red dot for the price. It’s lightweight, durable, and holds zero without any issues. The dot is clear and easy to acquire. Simple setup, reliable performance, and perfect for range use or duty rifles. Hard to beat for the value.
Reviewed in the United States on February 7, 2026 by dxnpck
Style: GEN II Red Dot Sight - Black (SOR5101)
This red dot is great right out the box. At 50 meters it was tight groups with zero adjustments. I highly recommend this based on price and quality. My only complaint is the battery cover was so tight that I left some marring from the screwdriver. But overall I plan on buying another it is that good.
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Reviewed in the United States on April 17, 2026 by tina guzman