The SIG Sauer ROMEO-RS Compact Red Dot Sight is a lightweight open-reflex pistol red dot sight on the slim RMSc footprint — purpose-built for compact carry pistols. Its 1x24mm window and molded aspheric glass lens give a clean sight picture, and this model runs a selectable circle-dot reticle.
SIG's MOTAC motion-activated illumination keeps it ready, with 8 brightness settings and a side-loading CR1632 tray (up to 20,000 hours). The hybrid steel/polymer housing keeps it light for carry.
How It Compares
Larger pistol? The ROMEO-RS PRO uses the full-size DeltaPoint Pro footprint. Want SIG's premium RMSc optic? The ROMEO-X Compact. It fits the RMSc footprint range — confirm your cut in our RMR vs RMSc guide. Browse all optics for optics-ready pistols.
Compatibility
RMSc (Shield) footprint — fits RMSc-cut carry pistols (P365 family, Glock 43X/48, Hellcat, Shield Plus and others). Confirm your slide cut before ordering.
Ideal For
- Optics-ready pistols with an RMSc slide cut
- Airsoft, training and licensed pistol setups
- Pistol-calibre carbines and long-barrelled pistols
- Shooters who want a compact, low-profile dot
Key Features
- Selectable circle-dot reticle (red)
- Slim 1x24mm window; aspheric glass lens
- RMSc footprint; MOTAC; 8 brightness settings
- Side-load CR1632 tray (up to 20,000 h)
- Hybrid steel/polymer housing
Technical Specifications
| Magnification |
1x (non-magnified) |
| Aperture |
24 mm |
| Reticle |
Circle-dot (red) |
| Brightness |
8 settings, MOTAC |
| Battery |
CR1632 (side-load, ~20,000 h) |
| Footprint |
RMSc (Shield) |
| Housing |
Steel/polymer hybrid |
| SKU / MPN / UPC |
SOR02100 / SOR02100 / 798681703371 |
What's Included
- SIG ROMEO-RS Compact red dot sight
- CR1632 battery, documentation
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and SIG's Infinite Guarantee.
Frequently Asked Questions
Which pistols does the SIG Sauer ROMEO-RS Compact fit?
The SIG Sauer ROMEO-RS Compact uses the RMSc footprint, so it fits RMSc-cut slides such as the SIG P365 family, Glock 43X/48, Hellcat and Shield Plus. Confirm your slide cut before ordering.
Should I choose the SIG Sauer ROMEO-RS Compact or the ROMEO-RS PRO?
The Compact uses the slim RMSc footprint for carry pistols; the PRO is the full-size DeltaPoint Pro optic.
How do you change the battery on the SIG Sauer ROMEO-RS Compact?
The SIG Sauer ROMEO-RS Compact takes a CR1632 cell that side-loads, so the optic stays mounted and you keep your zero.
What reticle does the SIG Sauer ROMEO-RS Compact have?
The SIG Sauer ROMEO-RS Compact uses the Circle-dot (red) reticle.
