SIG Sauer Romeo-X


The SIG Sauer® Romeo-X lineup is available in Compact and Pro versions. It features a CNC 7075 aluminum housing, intuitive adjustment buttons, a side-mounted battery compartment, and an ultra-low deck height that allows you to co-witness with standard-height iron sights.

The Romeo-X Compact fits the SIG P365 and all Shield™ RMSc footprints.

The Romeo-X Pro fits the SIG P320 and all DeltaPoint® Pro footprints.

Looking for an optic or sights for your custom slide? Order your choice of optic or sight package and we'll professionally install the optic for free!


The SIG Sauer Romeo-X red dot family of pistol-mounted reflex sights is inspired by the Mil-Spec Romeo-M17.

Ensure you select the correct model for your pistol’s slide cuts*.

  • The Romeo-X Compact fits the SIG P365 and all Shield RMSc footprints.
  • The Romeo-X Pro fits the SIG P320 and all DeltaPoint Pro footprints.

We suggest you review the Romeo-X Operators Manual for additional information.

SIG RomeoX dot optionsSIG Sauer Romeo-X Red Dot Key Features

  • CNC Machined 7075 Aluminum Housing
  • Motion Activated Illumination (MOTAC)
  • Easily select from 2 MOA dot or 32 MOA circle dot within the 24mm lens diameter
  • Side-loaded CR1632 battery with 20,000 hours of battery life
  • The optic features a low deck height to allow for a co-witness with standard-height sights
  • Choose from 15 illumination settings, including three night vision options
  • Distortion Free Aspherical Lens
  • Open emitter (The Romeo-M17 features a closed emitter)
  • Rated for use with .45 ACP and 10mm ammunition
  • Patent-pending Beryllium Copper Flexure Arm
  • Assembled in the U.S.A and inspired by Mil-Spec Romeo-M17

* Grayguns and SIG can not guarantee compatibility with your pistol. New pistols may be released with the footprints listed. However, design differences – including the amount of thread engagement – may make the sight incompatible with your pistol.

  • Romeo-X Compact, MPN SORX1200, UPC 798681686865
  • Romeo-X Pro, MPN SORX1000, UPC 798681688180

RomeoZero R Product Video

Additional information

Weight 1 lbs
Dimensions 7 × 5 × 3 in

Romeo-X Pro, Romeo-X Compact

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Many parts sold by Grayguns - including but not limited to triggers, trigger kits, internal components and spring kits - are intended for installation by a qualified armorer or gunsmith who is familiar with the firearm.

Although kits fit with no issues in a great majority of pistols, Grayguns cannot guarantee perfect functionality in every instance.

Due to varying tolerances present in all mass-produced firearms, professional fitting by a qualified armorer who is familiar with the pistol's action may be required.

Grayguns offers installation services for all parts kits we offer. If you have any issues or questions about the installation process, STOP IMMEDIATELY and contact the Grayguns Customer Service Team.