+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

SIG SAUER Romeo3 XL 1x35mm Red Dot Sight, Color: Black, Battery Type: CR2032, Up to 33% Off w/ Free Shipping — 2 models

01:41
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 3 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR31004
1 of 1 videos
SIG SAUER ROMEO3XL 1X35 MM
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
1 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
2 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
3 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
4 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
5 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
6 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
7 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
8 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
9 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
10 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
11 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
12 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004
Sig Romeo 3XL 1x35mm Red Dot Sight, 3 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR31004
13 of 13 images
Sig Romeo 3XL 1x35mm Red Dot Sight, 3 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR31004

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Questions & Answers
Will you need an additional mount to install red dot on the new 2019 P320 X Five Legion Featured Answer

Sig Sauer does not have a mount at this time ,but they said Springer Precion has one that will work.

by 2A All The Way, Verified Owner, August 30, 2019
See 4 More Answers
Will it fit on my p211 direct? Expert Answer

The SIG SAUER Romeo3 XL will not mount directly to the slide of your P211. The P211 uses the Sig-Loc & Deltapoint footprint, you will only be able to use the Sig Romeo-X Sig-Loc optics, or other optics that use the Deltapoint Pro footprint such as the Sig Romeo 1 Pro, Eotech EFLX, Vertex Defender ST/XL & more.

by Ethan, Gear Expert, September 17, 2025
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review Romeo 3 XL by Raceman, December 27, 2019
Fantastic sight. I replaced a Romeo 1 with the XL. It’s like looking thru a windshield vrs a port hole. The dot was clear and easily acquired during run and gun exercises. The controls are easily to use and the slide out battery compartment was ni...
Read More...
19/20 found this helpful
Helpful Positive Review Great Red Dot by BishopXSE, Verified Owner, October 18, 2021
This thing has huge glass. The frame is shallow enough so it doesn't feel like you're looking through a tube either. I have been very happy with the purchase so far. I'm using on a PCC. The only downside is the price. It seems like they went up in pr...
Read More...
3/3 found this helpful
Most Recent Reviews wide view great customer service by amiel, Verified Owner, July 13, 2025
First Sig Sauer customer service is number three one. This is a great product the glass is crystal clear. It’s easy to find the dot.
Most Recent Reviews Sig Romero3 XL by Beto, Verified Owner, May 26, 2025
I purchased the Sig Romeo three XL for my Sig rattler LT and the window on the red dot looks clean with the 6 MOA
Most Recent Reviews Romeo 3XL has super clear glass by Darnell, Verified Owner, April 30, 2025
huge window to look through with super clear glass. The dot is as crisp as it gets and the auto on off feature is helpful to save battery life
Most Recent Reviews Outstanding by JHunt, Verified Owner, February 28, 2025
I have used other red dots for years now. At the time I thought spending over $200 was a lot for a red dot. I think as satisfied with my previous dots, but then I came across the Sig red dot and was amazed to see it going for so much. Why would a red...
Read More...
Read All 11 Reviews
2 Models Available
Reticle
All
Search
Click to select this item for your bundle offer!

Buy Together and Save

As low as $1,009.98
You Save Up to 29%
Receive $22.00 OP Bucks
Expert Advice

Product Info for SIG SAUER Romeo3 XL 1x35mm Red Dot Sight

Improve your aim and reaction time in the field by equipping this Sig Romeo3 XL 1x35mm Red Dot Sight. SIG SAUER crafted these Red Dot Sights with an aircraft-grade aluminum housing that's rugged yet lightweight, and the waterproof and fogproof performance allows you to acquire targets in any weather conditions. The Sig Romeo3 XL 1x35mm Red MOA Dot Sight conserves power through the MOTAC (Motion Activated Illumination System) that turns the optic on when it senses motion and powers down when it does not. Equip your weapon with a Sig Romeo3 XL 1x35mm Waterproof Red Dot Sight to enhance your precision for nearly any application.image

WARNING: California`s Proposition 65

Specifications for SIG SAUER Romeo3 XL 1x35mm Red Dot Sight:

Manufacturer: SIG SAUER
Color: Black
Fabric/Material: Aircraft Grade Aluminum
Magnification: 1 x
Objective Lens Diameter: 35 mm
Objective Window Size: 32 x 24 mm
Illumination Type: LED
Illumination Color: Red
Brightness Settings: 12
Eye Relief: Unlimited
Adjustment Type: MOA
Adjustment Click Value: 1 MOA
Emitter Type: Open
Battery Type: CR2032
Water Resistance Level: IPX-7
Gun Make: SIG Sauer
Length: 2.1 in
Width: 1.4 in
Height: 1.4 in
Weight: 0.09 lb
Condition: New
Magnification Type: Fixed
Red Dot Sights-Footprint: Not Applicable
Mount Type: Picatinny
Attachment Type: Picatinny

Features of Sig Romeo3 XL 1x35mm Red Dot Sight

  • High transmittance red notch reflector for excellent brightness, light transmittance, and zero distortion
  • 3 MOA and 6 MOA Dot with multiple intensity settings for rapid target engagement under a full range of lighting conditions
  • MOTAC (Motion Activated Illumination System) powers up when it senses motion and powers down when it does not
  • The readily available CR2032 battery is side-loading, allowing for quick battery replacement without having to remove the sight from the firearm
  • Comes with a low-profile M1913 Picatinny mount. An absolute co-witness riser mount is available as an accessory
  • Aircraft grade CNC Aluminum housing ensures a lifetime of reliable service
  • Dependable waterproof (IPX-7 rated for complete water immersion up to 1 meter) and fogproof performance

Package Contents:

  • Sig Romeo3 XL 1x35mm Red Dot Sight

SIG SAUER Romeo3 XL 1x35mm Red Dot Sight Orderable Models

List of Orderable Models

SIG SAUER Romeo3 XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004 , MPN: SOR32004 , UPC: 798681618361 , Code: SD9-RD-R3XL-SOR32004
SIG SAUER Romeo3 XL 1x35mm Red Dot Sight, 3 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR31004 , MPN: SOR31004 , UPC: 798681618354 , Code: SD9-RD-R3XL-SOR31004

SIG SAUER Romeo3 XL 1x35mm Red Dot Sight Unavailable & Discontinued Models

List of Unorderable Models

USED Demo, SIG SAUER Romeo3 XL 1x35mm Red Dot Sight, 3 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR31004, EDEMO2, Used, Condition Like New , MPN: SOR31004-DEMO-EDEMO2 , Code: SD9-RD-R3XL-SOR31004-DEMO-EDEMO2
Demo, SIG SAUER Romeo3 XL 1x35mm Red Dot Sight, 3 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR31004 , MPN: SOR31004-DEMO , Code: SD9-RD-R3XL-SOR31004-DEMO
USED, SIG SAUER Romeo3 XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004 , MPN: SOR32004-EDEMO , Code: SD9-RD-R3XL-SOR32004-EDEMO-RE-B
Demo, SIG SAUER Romeo3 XL 1x35mm Red Dot Sight, 6 MOA Dot Reticle, Aircraft Grade Aluminum, Black, SOR32004 , MPN: SOR32004-DEMO , Code: SD9-RD-R3XL-SOR32004-DEMO
Compare (0)
1 item has been added
Add at least two items to compare