
Availability: In Stock
Current Stock: Out of stock
The Sig Sauer ECHO3 2-12x40 digital thermal imaging reflex sight brings thermal detection and magnification together in one compact optic built for hunters and tactical shooters who need to see in complete darkness. Mounted via M1913 (Picatinny) rail, this thermal sight combines a 2–12x variable magnification range with digital thermal imaging technology, letting you identify targets in low-light, no-light, and adverse weather conditions where conventional scopes fall short. Whether you're running predator hunts at night, clearing property after dark, or training in low-visibility scenarios, the ECHO3 adapts to conditions traditional optics can't handle.
Sig Sauer engineered the ECHO3 around practical field use: the 40mm thermal sensor array gathers heat signatures across a wide field of view, while the digital processing delivers a clear, usable image on a ruggedized display. The variable zoom lets you pick magnification to match your distance and environment—dial down for awareness, dial up for precision. The reflex-style design keeps the sight relatively lightweight and compact compared to standalone thermal monoculars, making it a realistic choice for rifle or carbine mounting on a hunt or operation where you need both hands free and a targeting solution integrated into your rifle platform.
The M1913 mount interface is the industry standard for modern rifles and carbines, so integration into your setup is straightforward. This is a serious tool for serious work—not a gimmick or range toy. If your hunting or shooting involves darkness, fog, heavy brush, or other conditions that blind conventional glass, a thermal sight removes guesswork and opens opportunities that light amplification alone cannot.
| Magnification Range | 2–12x |
| Objective Lens/Sensor | 40mm |
| Technology | Digital thermal imaging |
| Mount Type | M1913 Picatinny |
| Color | Black |
| Reticle Type | Multi reticle (digital) |
The ECHO3 uses an M1913 (Picatinny) rail mount, the modern standard on AR-pattern rifles, modern bolt-actions, and most tactical carbines. If your rifle has a Picatinny rail, the mount will fit directly. If your rifle has an older dovetail or ring mount, you'll need an adapter or separate mounting solution.
Thermal sights are purpose-built for detecting heat signatures, which means they excel in low-light, no-light, fog, and heavy vegetation where conventional scopes struggle. Daytime use is possible, but thermal imaging is optimized for darkness and obscured conditions where it has a real advantage. For pure daytime hunting, a standard rifle scope or variable power optic will typically provide better daylight image clarity and color definition.
The product ships as configured: the ECHO3 sight with M1913 mount. Confirm with the product documentation or your Bosque Outdoors contact for details on batteries, lens covers, mounts, or accessories included in your purchase.
Thermal detection range depends on target heat signature, ambient conditions, and sensor sensitivity. The 2–12x magnification range supports both close-quarters detection and longer-distance identification. For specific range performance specs, consult Sig Sauer's technical data or contact us for detailed information.

SKU: 114464019 • Width: 7.1in • Height: 4.6in • Depth: 9.3in • Weight: 2.59oz





Availability: In Stock
Current Stock: Out of stock
The Sig Sauer ECHO3 2-12x40 digital thermal imaging reflex sight brings thermal detection and magnification together in one compact optic built for hunters and tactical shooters who need to see in complete darkness. Mounted via M1913 (Picatinny) rail, this thermal sight combines a 2–12x variable magnification range with digital thermal imaging technology, letting you identify targets in low-light, no-light, and adverse weather conditions where conventional scopes fall short. Whether you're running predator hunts at night, clearing property after dark, or training in low-visibility scenarios, the ECHO3 adapts to conditions traditional optics can't handle.
Sig Sauer engineered the ECHO3 around practical field use: the 40mm thermal sensor array gathers heat signatures across a wide field of view, while the digital processing delivers a clear, usable image on a ruggedized display. The variable zoom lets you pick magnification to match your distance and environment—dial down for awareness, dial up for precision. The reflex-style design keeps the sight relatively lightweight and compact compared to standalone thermal monoculars, making it a realistic choice for rifle or carbine mounting on a hunt or operation where you need both hands free and a targeting solution integrated into your rifle platform.
The M1913 mount interface is the industry standard for modern rifles and carbines, so integration into your setup is straightforward. This is a serious tool for serious work—not a gimmick or range toy. If your hunting or shooting involves darkness, fog, heavy brush, or other conditions that blind conventional glass, a thermal sight removes guesswork and opens opportunities that light amplification alone cannot.
| Magnification Range | 2–12x |
| Objective Lens/Sensor | 40mm |
| Technology | Digital thermal imaging |
| Mount Type | M1913 Picatinny |
| Color | Black |
| Reticle Type | Multi reticle (digital) |
The ECHO3 uses an M1913 (Picatinny) rail mount, the modern standard on AR-pattern rifles, modern bolt-actions, and most tactical carbines. If your rifle has a Picatinny rail, the mount will fit directly. If your rifle has an older dovetail or ring mount, you'll need an adapter or separate mounting solution.
Thermal sights are purpose-built for detecting heat signatures, which means they excel in low-light, no-light, fog, and heavy vegetation where conventional scopes struggle. Daytime use is possible, but thermal imaging is optimized for darkness and obscured conditions where it has a real advantage. For pure daytime hunting, a standard rifle scope or variable power optic will typically provide better daylight image clarity and color definition.
The product ships as configured: the ECHO3 sight with M1913 mount. Confirm with the product documentation or your Bosque Outdoors contact for details on batteries, lens covers, mounts, or accessories included in your purchase.
Thermal detection range depends on target heat signature, ambient conditions, and sensor sensitivity. The 2–12x magnification range supports both close-quarters detection and longer-distance identification. For specific range performance specs, consult Sig Sauer's technical data or contact us for detailed information.
SKU: 114464019 • Width: 7.1in • Height: 4.6in • Depth: 9.3in • Weight: 2.59oz
