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Questions & Answers
Will this fit a sig p365 fuse? Expert Answer

No, the RS-Pro uses the Deltapoint Pro footprint. You would need the Romeo-RS Compact model which can be found linked below:
https://www.opticsplanet.com/sig-sauer-romeo-rs-compact-red-dot-sight-24mm-objective.html

by Ethan, Gear Expert, November 17, 2025
will this fit a Glock 43X MOS

Yes. It fits onto any GLOCK slide as long as there is a RMR cut. If not, on this site a few guys sell underplates to mount onto the rear sight cuts. then go for it.

by MNGUNSMITH, Verified Owner, November 15, 2025

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Product Info for SIG SAUER Romeo-RS Pro 1x31mm Reflex Red Dot Sight

The ROMEO-RS (Reinforced Steel) was specifically engineered to provide the accuracy and convenience of a pistol-mounted red dot at a cost that competes with high-end iron sights. Inspired by the design of modern striker-fired pistols that employ high-strength polymer and metal, the ROMEO-RS housing forms around a rugged steel chassis that supports and protects a premium aspherical glass lens.image

Metal inserts allow for optimal torque load when mounting the optic to a pistol slide and installing the side-load battery tray, while additional metal inserts provide increased accuracy and long term durability for the windage and elevation adjustment mechanisms.

The ROMEO-RS features a convenient side-mounted illumination adjustment button embedded into the polymer housing to prevent accidental interference, and the side-load battery tray makes battery replacements easy to do while maintaining zero. SIG SAUERs updated footprint design maintains true compatibility with industry-standard optics cuts while allowing for the additional lock-up strength provided by steel recoil pins to eliminate the potential for any lateral shift.

Built in Tualatin, Oregon, the ROMEO-RS was engineered to deliver premium red dot functionality at a cost thats within reach of any shooter.

Specifications for SIG SAUER Romeo-RS Pro 1x31mm Reflex Red Dot Sight:

Manufacturer: SIG SAUER
Color: Black
Magnification: 1 x
Objective Lens Diameter: 31 mm
Illumination Type: LED
Emitter Type: Open
Optical Coating: Spectracoat
Battery Type: CR1632
Length: 1.83 in
Weight: 26.6 oz
Red Dot Sights-Footprint: Not Applicable
W/E Travel at 100 Yds: 70 MOA

Features of SIG SAUER Romeo-RS Pro 1x31mm Reflex Red Dot Sight

  • Hybrid design featuring a skeletonized steel chassis, molded into a high-strength polymer housing
  • Molded glass aspheric lens for a distortion-free sight picture
  • High efficiency point source LED emitter with 8 individual brightness settings
  • Large side control button for easy reticle adjustments
  • Convenient side-mounted CR1632 battery tray with security screw for easy access without removing the optic from the firearm
  • Minimum continuous runtime of 20,000 hours (at medium setting, dot-only)
  • MOTAC (Motion Activated Illumination) that powers up when motion is detected, powering down when inactive
  • Fully Backed by SIG SAUERs Infinite Guarantee

Package Contents:

  • SIG SAUER Romeo-RS Pro 1x31mm Reflex Red Dot Sight

SIG SAUER Romeo-RS Pro 1x31mm Reflex Red Dot Sight Orderable Models

List of Orderable Models

  • SIG SAUER Romeo-RS Pro 1x31mm Reflex Red Dot Sight, 3 MOA, Black, SOR02030 , MPN: SOR02030 , UPC: 798681704682 , Code: SD9-RD-SOR02030-SOR02030
  • SIG SAUER Romeo-RS Pro 1x31mm Reflex Red Dot Sight, 3 MOA Green Dot Reticle, Black, SOR02080 , MPN: SOR02080 , UPC: 798681721504 , Code: SD9-RD-SOR02030-SOR02080
  • SIG SAUER Romeo-RS Pro 1x31mm Reflex Red Dot Sight, 6 MOA, Black, SOR02060 , MPN: SOR02060 , UPC: 798681703364 , Code: SD9-RD-SOR02030-SOR02060
  • SIG SAUER Romeo-RS Pro 1x31mm Reflex Red Dot Sight, 6 MOA Green Dot Reticle, Black, SOR02090 , MPN: SOR02090 , UPC: 798681721511 , Code: SD9-RD-SOR02030-SOR02090
  • SIG SAUER Romeo-RS Pro 1x31mm Reflex Red Dot Sight, Circle Dot, Black, SOR02000 , MPN: SOR02000 , UPC: 798681703357 , Code: SD9-RD-SOR02030-SOR02000
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