The SIG Sauer ROMEO-RS Compact is a lightweight open-reflex pistol red dot 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 — confirm your cut in our RMR vs RMSc guide. Browse all pistol dot sights.
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.
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 |
| 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 |
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 it fit?
RMSc-cut carry pistols — the P365 family, Glock 43X/48, Hellcat, Shield Plus and others. Confirm your slide cut.
Compact or PRO?
The Compact uses the slim RMSc footprint for carry pistols; the PRO is the full-size DeltaPoint Pro optic.
Battery swaps?
The CR1632 side-loads, so you keep your zero.
