SIG Sauer Romeo Zero vs Shield SIS2: specs compared
Updated 05 September 2026.
3
specs differ
SIG Sauer Romeo Zero and Shield SIS2 differ on 3 specs: make, model, optic type.
| Spec | SIG Sauer Romeo Zero | Shield SIS2 |
|---|---|---|
| Make | SIG Sauer | Shield |
| Model | Romeo Zero | SIS2 |
| Footprint | Shield RMSc | Shield RMSc |
| Optic type | open-emitter reflex | enclosed-emitter reflex |
| Mounts to | pistol slide cut or an adapter plate | pistol slide cut or an adapter plate |
Questions and answers
How do SIG Sauer Romeo Zero and Shield SIS2 compare?
SIG Sauer Romeo Zero and Shield SIS2 differ on 3 specs: make, model, optic type.