Availability: In Stock
Current Stock: Out of stock
The Sig Sauer Romeo-X Sig-Loc Pro is a 1x24mm pistol red dot built on Sig's proprietary Sig-Loc mounting system—a platform engineered to deliver the rock-solid zero hold and optical clarity that serious shooters demand. If you're running a carry gun, competition pistol, or duty firearm configured with Sig-Loc mounting, this optic represents a genuine step forward in how reflex sights lock to the slide. The five-point contact design at the heart of Sig-Loc eliminates the flex and shift that can creep in under heavy recoil, while the bottom-mounted footprint geometry buys you a longer optical path—which means less parallax distortion and a crisper, more forgiving sight picture across a wider field of view than traditional top-mounted designs.
Built from 7075 aluminum with a fully sealed optical system and distortion-free aspherical glass, the Romeo-X is waterproofed to IPX-8 and tough enough for hard use. The 3 MOA green dot reticle sits clean against most targets and works well in daylight; the emitter is fully enclosed, so you're not fighting glare or window reflections. Fifteen illumination settings—including three dedicated for night vision—keep the dot visible in nearly any light, and Sig's MOTAC (Motion Activated Illumination) powers the optic down when it's holstered and back on when you draw, stretching battery life to a claimed 20,000 hours on a single CR2032. At 0.96 inches tall, the Romeo-X plays well with standard-height iron sights for a true co-witness setup. Total elevation and windage travel—40 and 80 MOA respectively—give you room to dial for distance or hold over without running out of adjustment.
This is an American-assembled optic backed by Sig's Infinite Guarantee, designed for shooters who treat their gear like their life depends on it. If your pistol is already fitted for Sig-Loc or you're planning a build around it, the Romeo-X Pro eliminates the guesswork of compatibility and delivers the integration and stability that separates a good red dot from one you'll trust without hesitation.
| Magnification | 1x |
| Objective Lens Diameter | 24 mm |
| Reticle | 3 MOA Green Dot |
| Mount Footprint | Sig-Loc Pro (RX) |
| Height | 0.96 in (24.38 mm) |
| Length | 1.9 in (48.26 mm) |
| Width | 1.24 in (31.50 mm) |
| Housing Material | 7075 Aluminum |
| Color | Black |
| Illumination Modes | 15 (12 Daylight, 3 Night Vision) |
| Elevation Travel | 40 MOA |
| Windage Travel | 80 MOA |
| Waterproofing | IPX-8 |
| Battery | 1x CR2032 |
| Battery Life | 20,000 hours |
| Emitter Type | Enclosed |
The Romeo-X uses Sig's proprietary Sig-Loc Pro mounting footprint. Your slide must be milled or factory-configured for Sig-Loc to accept this optic directly. Sig-Loc-equipped pistol slides remain backward-compatible with traditional top-mount reflex sights if needed.
Yes. At 0.96 inches in height, the Romeo-X is designed to work with standard-height iron sights for a true co-witness configuration.
The CR2032 battery delivers up to 20,000 hours of runtime. The optic features MOTAC (Motion Activated Illumination), which powers down when holstered to extend battery life further. The battery side-loads for quick field replacement.
The Romeo-X ships with the optic, a CR2032 battery, and is mounted on the Sig-Loc Pro (RX) footprint; check the specific product listing for any included accessories or documentation.
SKU: 194198515
Availability: In Stock
Current Stock: Out of stock
The Sig Sauer Romeo-X Sig-Loc Pro is a 1x24mm pistol red dot built on Sig's proprietary Sig-Loc mounting system—a platform engineered to deliver the rock-solid zero hold and optical clarity that serious shooters demand. If you're running a carry gun, competition pistol, or duty firearm configured with Sig-Loc mounting, this optic represents a genuine step forward in how reflex sights lock to the slide. The five-point contact design at the heart of Sig-Loc eliminates the flex and shift that can creep in under heavy recoil, while the bottom-mounted footprint geometry buys you a longer optical path—which means less parallax distortion and a crisper, more forgiving sight picture across a wider field of view than traditional top-mounted designs.
Built from 7075 aluminum with a fully sealed optical system and distortion-free aspherical glass, the Romeo-X is waterproofed to IPX-8 and tough enough for hard use. The 3 MOA green dot reticle sits clean against most targets and works well in daylight; the emitter is fully enclosed, so you're not fighting glare or window reflections. Fifteen illumination settings—including three dedicated for night vision—keep the dot visible in nearly any light, and Sig's MOTAC (Motion Activated Illumination) powers the optic down when it's holstered and back on when you draw, stretching battery life to a claimed 20,000 hours on a single CR2032. At 0.96 inches tall, the Romeo-X plays well with standard-height iron sights for a true co-witness setup. Total elevation and windage travel—40 and 80 MOA respectively—give you room to dial for distance or hold over without running out of adjustment.
This is an American-assembled optic backed by Sig's Infinite Guarantee, designed for shooters who treat their gear like their life depends on it. If your pistol is already fitted for Sig-Loc or you're planning a build around it, the Romeo-X Pro eliminates the guesswork of compatibility and delivers the integration and stability that separates a good red dot from one you'll trust without hesitation.
| Magnification | 1x |
| Objective Lens Diameter | 24 mm |
| Reticle | 3 MOA Green Dot |
| Mount Footprint | Sig-Loc Pro (RX) |
| Height | 0.96 in (24.38 mm) |
| Length | 1.9 in (48.26 mm) |
| Width | 1.24 in (31.50 mm) |
| Housing Material | 7075 Aluminum |
| Color | Black |
| Illumination Modes | 15 (12 Daylight, 3 Night Vision) |
| Elevation Travel | 40 MOA |
| Windage Travel | 80 MOA |
| Waterproofing | IPX-8 |
| Battery | 1x CR2032 |
| Battery Life | 20,000 hours |
| Emitter Type | Enclosed |
The Romeo-X uses Sig's proprietary Sig-Loc Pro mounting footprint. Your slide must be milled or factory-configured for Sig-Loc to accept this optic directly. Sig-Loc-equipped pistol slides remain backward-compatible with traditional top-mount reflex sights if needed.
Yes. At 0.96 inches in height, the Romeo-X is designed to work with standard-height iron sights for a true co-witness configuration.
The CR2032 battery delivers up to 20,000 hours of runtime. The optic features MOTAC (Motion Activated Illumination), which powers down when holstered to extend battery life further. The battery side-loads for quick field replacement.
The Romeo-X ships with the optic, a CR2032 battery, and is mounted on the Sig-Loc Pro (RX) footprint; check the specific product listing for any included accessories or documentation.
SKU: 194198515