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ROMEO1Pro
Duty-focused reflex optic.
Source-backed record
Research record; not firsthand tested.
12 documented specifications, source references, and verification dates are present. Mounting paths are reviewed separately.
optic
Weight: 1.0 oz / 28 g, sight only without battery
Dimensions: 1.83 × 1.25 × 1.08 in / 46.5 × 31.7 × 27.4 mm
Compatibility: SIG PRO / DeltaPoint Pro-family footprint
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Description
Duty-focused reflex optic.
Specifications
| Design | Open emitter |
|---|---|
| Window | 30 mm diagonal |
| Battery | Side-loading CR1632 |
| Housing | Aircraft-grade aluminum |
| Reticle | 3 or 6 MOA red dot |
| Brightness | 10 daylight and 2 night-vision settings |
| Eye relief | Unlimited |
| Battery life | 20,000+ hours |
| Magnification | 1× |
| Adjustment range | ±50 MOA elevation and windage |
| Water resistance | IPX7 |
| Motion activation | MOTAC |
Sources and verification
- Manufacturer product page
- Specification source — checked July 23, 2026
- Mounting-footprint source — checked July 16, 2026
Reviewed pistol mounting paths
| Pistol configuration | Result | Mounting details | Verified |
|---|---|---|---|
| SIG Sauer P320-M17 Optic Ready P320-M17 Optic Ready · SIG P320 M17 / M18 Optic Cut | direct mount | No plate required — Follow SIG screw and torque instructions for the exact slide revision. | Checked July 15, 2026 Not personally tested |
| SIG Sauer P320-M18 Optic Ready P320-M18 Optic Ready · SIG P320 M17 / M18 Optic Cut | direct mount | No plate required — Follow SIG screw and torque instructions for the exact slide revision. | Checked July 15, 2026 Not personally tested |