Sig Sauer Electro-Optics Echo RV50-LRF 640x512 2.5-20x50mm Thermal Riflescope

The SIG Sauer Echo RV50-LRF is a premium thermal riflescope engineered for serious hunters, predator callers, and tactical shooters. At its core sits a high-resolution 640x512 long-wave infrared (LWIR) sensor with a 12 micron pixel pitch and sub-20mK thermal sensitivity, paired with a fast 50Hz refresh rate for smooth scanning and tracking of heat signatures at distance.

A 50mm objective lens feeds the sensor, and the optic runs a wide 2.5-20x magnification range so you can sweep open terrain at low power and positively identify targets at full zoom. The housing sits on a standard 30mm maintube, making it easy to mount with conventional 30mm rings on any 1913 Picatinny rail. The scope is fully waterproof to IP67 standards, so it shrugs off rain, snow, and dust in the field.

The integrated 1000-yard laser rangefinder pushes distance data directly into the BDX 2.0 ballistic ecosystem, allowing the scope to display a corrected hold-over solution on compatible systems. With an 8.8 degree field of view and a compact 3.5 inch overall height, the Echo RV50-LRF balances long-range detection with a sight picture wide enough for moving targets. This is a current-production Sig Sauer Electro-Optics thermal riflescope, ready to mount to your rifle and head into the field.