Search  for anything...

SIG SAUER Romeo-X Compact Pistol-Mounted Reflex Sight | Rugged Durable Aluminum Lightweight Waterproof MOTAC Open Sight with 15 Illumination Settings

  • Based on 217 reviews
Condition: New
Checking for the best price...
$359.99 Why this price?
Save $40.00 was $399.99

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, May 4
Order within 16 hours and 48 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Color: Black


Style: 2 MOA / 32 MOA Red Circle Dot


Features

  • DURABLE CONSTRUCTION - The ROMEO-X COMPACT, inspired by the MIL-SPEC ROMEO-M17, features a rugged CNC Machined 7075 Aluminum Housing, meeting military standards for reliability and performance, ensuring robustness to withstand challenging conditions; Suited for the optic ready P365 Family of pistols; Designed with RX footprint compatible with Shield RMS-c mounts, ensuring secure and versatile installation on compact pistols
  • HIGH-QUALITY OPTICAL COMPONENTS - Equipped with a Distortion-Free Aspherical Lens, the ROMEO-X COMPACT open reflex sight from SIG SAUER delivers a clear and distortion-free sight picture for enhanced accuracy; The use of quality optical components ensures optimal light transmission and clarity in various shooting conditions
  • ENHANCED PERFORMANCE - The ROMEO-X COMPACT is equipped with an innovative ultra-low deck height that allows for seamless co-witnessing with standard-height iron sights; Additionally, it integrates a patent-pending Beryllium Copper Flexure Arm, enhancing durability and ensuring reliable performance under demanding conditions
  • VERSATILE RETICLE OPTIONS - This ROMEO-X COMPACT features a Circle Dot reticle with individually selectable 2 MOA Dot & 32 MOA Circle, providing versatility for different shooting scenarios; Shooters can customize their reticle based on precision needs or quick target acquisition, enhancing adaptability in the field
  • CONVENIENT IN USE - ROMEO-X COMPACT incorporates intuitive adjustment buttons and a side-mounted power unit compartment for easy access; With 20,000 hours of run time and MOTAC technology, it conserves power by activating/deactivating illumination based on motion; The sight offers 15 illumination settings (12 DL & 3 NV), providing users with flexibility in adapting the reticle brightness to different lighting conditions

Brand: Sig Sauer


Color: Black


Style: 2 MOA / 32 MOA Red Circle Dot


Sport: Airsoft


Item Weight: 0.3 Ounces


Material: Aluminum


Objective Lens Diameter: 24 Millimeters


Compatible Devices: Handgun


Mounting Type: Picatinny/Weaver rail mount


Night vision: Yes


Objective Lens Diameter: 24 Millimeters


Compatible Devices: Handgun


Mounting Type: Picatinny/Weaver rail mount


Night vision: Yes


Reticle Type: Circle Dot


Color: Black


Product Style: 2 MOA / 32 MOA Red Circle Dot


Item Weight: 0.3 Ounces


Material Type: Aluminum


Brand Name: Sig Sauer


Sport Type: Airsoft


Manufacturer: Sig Sauer


UPC: 798681686865


Item Type Name: Red Dot Sight


Included Components: Red Dot Sight


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 4

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Very Compact!
Color: Black Style: 2 MOA / 32 MOA Red Circle Dot
Great sight. Easy to install and use.
Reviewed in the United States on March 26, 2026 by compact45

  • Great sight
Color: Black Style: 2 MOA / 32 MOA Red Circle Dot
I'm not new to using red dots, but this was the first one I've bought. For use on my gen 1 Sig 365 XL, I needed a red dot that included a rear sight and with the Sig, it's a correct match for the front sight. If I had a gen 2, which has a rear sight that's separate from the sight plate, I likely would have chosen the enclosed version, which does not have the built in rear sight. The sight was easy to install, easy to get zero'd and as long as you've got some decent training, easy to pick up the dot immediately. Please make sure you use the correct screws for your gun and that you've properly torqued them. There are three sets of screws included. ... show more
Reviewed in the United States on January 5, 2026 by Amazon Customer

  • One of the best value enclosed red dot on the market
Color: Black Style: 2 MOA / 32 MOA Red Circle Dot
This is on par with an EPS Carry. It is durable, sleek, and holds zero just fine since I installed it about a year ago. Battery still going strong, kept at 8/12 brightness. Compared to the EPS Carry: The window has a blue tint. I like it personally. The deck height is slightly lower. The battery tray protrudes a bit on the right side. There is no way to lock the buttons, so if you like racking the slide from the rear and accidentally click the buttons, you will inadvertently adjust your brightness. ... show more
Reviewed in the United States on November 25, 2025 by Tony

  • Great sight!
Color: Black Style: 3 MOA Red Dot
great red dot sight awesome sight picture and clear reticle fits perfect on my Legion 365
Reviewed in the United States on February 7, 2026 by Ryan

  • Great Sight
Color: Black Style: 3 MOA Red Dot
This is a great sight!!! I have one on my Sig P365 9mm and I put one on my wife's Sig P365 380. Easy to remove existing plate and install.
Reviewed in the United States on February 25, 2026 by Flyboy80550

  • Soft lens coating, don't recommend
Color: Black Style: 2 MOA / 32 MOA Red Circle Dot
Dot works fine, but lens gets scratched easily compared to my other vortex and holosun, I clean all of them the same way, somehow sig's have more scratches.
Reviewed in the United States on March 31, 2026 by P. Lin

  • Time will tell, but so far happy with it
Color: Black Style: 3 MOA Red Dot
It seems high quality, the glass has a blue tint which is annoying but many have tint. I have astigmatism and the dot is crisp for me over my Trijicon RMR and SRO. I mounted this on a ARC division Glock 43 slide and it fits correctly. If you get this optic you can use standard sights. I don't like that it has a non standard battery like every other optic that uses CR 2032 batteries. So you'll have to stock up on a new size. I've banged it around and it's fine, it seems sturdy, it seems reliable. It claims it's assembled in the United States and it comes with a unconditional lifetime warranty, but I'm skeptical Sig will honor it with their now terrible reputation for QC in their products but who knows. I chose this over a EPS carry, maybe wish I didn't idk I personally have had only bad luck with holosun elite optics and am not buying a a RMRcc, so this seemed like a shot to give. Also this is not the enclosed version, it is a standard open emitter which is what I wanted because I don't really personally trust closed emitters as I have also had bad luck with an aimpoint ACRO and this sig optic is going on my carry gun which I'm not too worried about not being able to use the optic if it gets wet. ... show more
Reviewed in the United States on August 5, 2025 by kyle f.

  • Great product
Color: Flat Dark Earth Style: 2 MOA / 32 MOA Red Circle Dot
Great Red dot sight for one of my Sigs. Simple functionality, easy to zero…. Well made.
Reviewed in the United States on February 4, 2026 by Kelly Ballinger

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...