Availability: In Stock
The Trijicon 600866 HD XR Night Sights for Sig Sauer are self-illuminating handgun sights built for shooters who need reliable target acquisition in low light and darkness. Fitted with green tritium lamps housed in protective aluminum cylinders, these sights glow without batteries or external power—ideal for defensive carry, home defense, or low-light range sessions. The orange outline front sight and black outline rear create a high-contrast sight picture even in daylight, while the tritium glow takes over when the sun goes down.
The design centers on a thinner front post that opens up your field of view and keeps situational awareness sharp during critical moments. A silicone rubber cushion cushions the tritium-phosphor lamps against impact and recoil stress, while sapphire jewel windows on each lamp protect the tritium and diffuse its glow evenly. The rear sight features a U-notch profile proven for fast, intuitive sight alignment.
These sights drop directly onto most Sig Sauer handguns—9mm and .357 Sig models—making installation straightforward for gunsmiths and equipped shooters. Note that they do not fit the P938 or P365, and they're designed for standard Sig Sauer duty and carry pistols, not Sig 1911 platforms.
| Brand | Trijicon |
| Model Number | 600866 |
| Sight Type | Night Sights (Tritium) |
| Tritium Color | Green |
| Front Sight Outline | Orange |
| Rear Sight Outline | Black |
| Rear Sight Profile | U-notch |
| Lamp Protection | Aluminum cylinders with sapphire jewel windows |
| Compatibility | Sig Sauer 9mm and .357 Sig (not P938, P365, or 1911 models) |
The Trijicon 600866 fits most standard Sig Sauer handguns chambered in 9mm and .357 Sig. They do not fit the P938, P365, or Sig 1911 pistols. If you're unsure about your specific model, contact our team for compatibility confirmation.
No. Tritium is a self-illuminating isotope that glows continuously without batteries, charging, or sunlight. The green tritium in these sights will glow for years in darkness, providing always-ready low-light aiming.
A slimmer front post reduces the visual block in your sight picture, keeping more of your target visible for faster aim adjustment and better situational awareness. This is especially valuable in dynamic or defensive scenarios where speed counts.
Each tritium lamp is housed in an aluminum cylinder and covered with a sapphire jewel window. The sapphire protects the tritium from impact damage while also diffusing its glow evenly. A silicone rubber cushion around the lamps absorbs recoil and impact stress.
SKU: 115861419 • Width: 6in • Height: 0.4in • Depth: 6in • Weight: 0.12oz
Availability: In Stock
The Trijicon 600866 HD XR Night Sights for Sig Sauer are self-illuminating handgun sights built for shooters who need reliable target acquisition in low light and darkness. Fitted with green tritium lamps housed in protective aluminum cylinders, these sights glow without batteries or external power—ideal for defensive carry, home defense, or low-light range sessions. The orange outline front sight and black outline rear create a high-contrast sight picture even in daylight, while the tritium glow takes over when the sun goes down.
The design centers on a thinner front post that opens up your field of view and keeps situational awareness sharp during critical moments. A silicone rubber cushion cushions the tritium-phosphor lamps against impact and recoil stress, while sapphire jewel windows on each lamp protect the tritium and diffuse its glow evenly. The rear sight features a U-notch profile proven for fast, intuitive sight alignment.
These sights drop directly onto most Sig Sauer handguns—9mm and .357 Sig models—making installation straightforward for gunsmiths and equipped shooters. Note that they do not fit the P938 or P365, and they're designed for standard Sig Sauer duty and carry pistols, not Sig 1911 platforms.
| Brand | Trijicon |
| Model Number | 600866 |
| Sight Type | Night Sights (Tritium) |
| Tritium Color | Green |
| Front Sight Outline | Orange |
| Rear Sight Outline | Black |
| Rear Sight Profile | U-notch |
| Lamp Protection | Aluminum cylinders with sapphire jewel windows |
| Compatibility | Sig Sauer 9mm and .357 Sig (not P938, P365, or 1911 models) |
The Trijicon 600866 fits most standard Sig Sauer handguns chambered in 9mm and .357 Sig. They do not fit the P938, P365, or Sig 1911 pistols. If you're unsure about your specific model, contact our team for compatibility confirmation.
No. Tritium is a self-illuminating isotope that glows continuously without batteries, charging, or sunlight. The green tritium in these sights will glow for years in darkness, providing always-ready low-light aiming.
A slimmer front post reduces the visual block in your sight picture, keeping more of your target visible for faster aim adjustment and better situational awareness. This is especially valuable in dynamic or defensive scenarios where speed counts.
Each tritium lamp is housed in an aluminum cylinder and covered with a sapphire jewel window. The sapphire protects the tritium from impact damage while also diffusing its glow evenly. A silicone rubber cushion around the lamps absorbs recoil and impact stress.
SKU: 115861419 • Width: 6in • Height: 0.4in • Depth: 6in • Weight: 0.12oz