The SIG Sauer ROMEO-MDC is an open emitter pistol optic on the RMSc footprint, offered with a 3 MOA Dot reticle in red. The window measures 0.91 x 0.91 in, and the aluminum housing measures 1.59 x 1.08 x 1.0 in and 1.03 oz. It runs on a CR1632 cell that can be changed with the optic still mounted, and adds shake awake and night vision settings. Measured against the 311 pistol optics in the index, it lands on the lighter side for weight (1.03 oz), in the largest quarter for window area (0.8281 sq in), and on the cheaper side for price ($250). It is one of 61 entries in the index that qualify as a RMSc footprint optic. The closest listed comparison is SIG Sauer ROMEO-RS COMPACT CLEAR, the same brand's RMSc footprint optic, priced at $200.

| Series | ROMEO-MDC |
| Reticle color | Red |
| Reticle options | 3 MOA Dot |
| Optic Removal for Battery Change | No |
| Window Size (in) | 0.91 x 0.91 |
| Enclosed | No |
| Footprint | RMSc |
| Battery | CR1632 |
| Solar Failsafe | No |
| Shake Awake | Yes |
| Night Vision Compatible | Yes |
| Material | Aluminum |
| Weight (oz) | 1.03 |
| Dimensions (in) | 1.59 x 1.08 x 1.0 |
| Country of Manufacture | USA |
| Average Price | $250 |
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