
Availability: In Stock
Current Stock: Out of stock
The Sig Sauer ROMEO4H 1x20 red dot sight is a compact electronic sight built for shooters who demand speed and reliability across multiple firearm platforms. Whether you're running it on a rifle, pistol, or shotgun, the ROMEO4H delivers the single-plane aiming simplicity that modern shooters expect—especially in defensive and dynamic shooting scenarios where fast target acquisition matters. The green horseshoe dot reticle cuts through clutter and helps you stay locked on target from close quarters to mid-range distances.
Built on a strengthened aluminum housing and rated IPX-7 waterproof and fogproof, this sight handles the environments you actually shoot in without hesitation. The green dot runs on a single CR2032 battery with over 50,000 hours of runtime on mid-range brightness—meaning you'll forget about battery changes far more often than you'll need to make them. Motion-activated illumination (MOTAC) powers the optic on when you move it, then shuts down when static, stretching that already impressive battery life even further. An efficient LED ensures the dot stays crisp and visible in bright daylight, where many cheaper red dots wash out.
Sig ships the ROMEO4H with both a co-witness QR mount and a low-profile mount, so you can configure it to fit your gun and your sight picture right out of the box. 0.5 MOA adjustments keep your zero tight and repeatable. If the green horseshoe isn't your preference, four reticle options let you tailor the sight to your style and application.
| Magnification | 1x |
| Objective Lens Diameter | 20 mm |
| Reticle | Green horseshoe dot (4 options available) |
| Adjustment Increment | 0.5 MOA |
| Battery Type | CR2032 |
| Battery Runtime | 50,000+ hours (mid-range setting) |
| Waterproof Rating | IPX-7 |
| Fogproof | Yes |
| Housing Material | Aluminum (lightweight, strengthened) |
| Illumination | Motion-activated LED (MOTAC) |
| Mounts Included | Co-witness QR mount and low-profile mount |
| Color | Graphite |
The ROMEO4H is designed for use on a range of popular firearms platforms. Sig includes a co-witness QR mount and a low-profile mount, so you can configure it to fit rifles, pistols, and shotguns. Check that your firearm's mounting surface is compatible with QR (quick-release) or low-mount systems before purchase.
The CR2032 battery delivers over 50,000 hours of runtime at mid-range brightness. The motion-activated MOTAC system extends battery life by turning the optic off when not in use, so real-world battery life is substantially longer than the raw hour figure suggests.
The ROMEO4H comes with a co-witness QR mount and a low-profile mount, giving you the flexibility to set up the sight to your preferred height and attachment method right out of the package.
The ROMEO4H features an efficient LED designed to stay visible in bright daylight conditions. While all red-dot sights perform better in lower light than full sun, this optic is engineered to remain usable in high-brightness environments.

SKU: 114465796 • Width: 7.7in • Height: 3.7in • Depth: 11.3in • Weight: 1.41oz





Availability: In Stock
Current Stock: Out of stock
The Sig Sauer ROMEO4H 1x20 red dot sight is a compact electronic sight built for shooters who demand speed and reliability across multiple firearm platforms. Whether you're running it on a rifle, pistol, or shotgun, the ROMEO4H delivers the single-plane aiming simplicity that modern shooters expect—especially in defensive and dynamic shooting scenarios where fast target acquisition matters. The green horseshoe dot reticle cuts through clutter and helps you stay locked on target from close quarters to mid-range distances.
Built on a strengthened aluminum housing and rated IPX-7 waterproof and fogproof, this sight handles the environments you actually shoot in without hesitation. The green dot runs on a single CR2032 battery with over 50,000 hours of runtime on mid-range brightness—meaning you'll forget about battery changes far more often than you'll need to make them. Motion-activated illumination (MOTAC) powers the optic on when you move it, then shuts down when static, stretching that already impressive battery life even further. An efficient LED ensures the dot stays crisp and visible in bright daylight, where many cheaper red dots wash out.
Sig ships the ROMEO4H with both a co-witness QR mount and a low-profile mount, so you can configure it to fit your gun and your sight picture right out of the box. 0.5 MOA adjustments keep your zero tight and repeatable. If the green horseshoe isn't your preference, four reticle options let you tailor the sight to your style and application.
| Magnification | 1x |
| Objective Lens Diameter | 20 mm |
| Reticle | Green horseshoe dot (4 options available) |
| Adjustment Increment | 0.5 MOA |
| Battery Type | CR2032 |
| Battery Runtime | 50,000+ hours (mid-range setting) |
| Waterproof Rating | IPX-7 |
| Fogproof | Yes |
| Housing Material | Aluminum (lightweight, strengthened) |
| Illumination | Motion-activated LED (MOTAC) |
| Mounts Included | Co-witness QR mount and low-profile mount |
| Color | Graphite |
The ROMEO4H is designed for use on a range of popular firearms platforms. Sig includes a co-witness QR mount and a low-profile mount, so you can configure it to fit rifles, pistols, and shotguns. Check that your firearm's mounting surface is compatible with QR (quick-release) or low-mount systems before purchase.
The CR2032 battery delivers over 50,000 hours of runtime at mid-range brightness. The motion-activated MOTAC system extends battery life by turning the optic off when not in use, so real-world battery life is substantially longer than the raw hour figure suggests.
The ROMEO4H comes with a co-witness QR mount and a low-profile mount, giving you the flexibility to set up the sight to your preferred height and attachment method right out of the package.
The ROMEO4H features an efficient LED designed to stay visible in bright daylight conditions. While all red-dot sights perform better in lower light than full sun, this optic is engineered to remain usable in high-brightness environments.
SKU: 114465796 • Width: 7.7in • Height: 3.7in • Depth: 11.3in • Weight: 1.41oz
