SIG SAUER’S Electro Optics Division introduced the ECHO3, a follow-up to the company’s ECHO1, 27 February 2020. A direct-view thermal sight, its form factor is similar to the ECHO1, but feature rich to plagiarize marketing accolades. SIG’s Electro Optics turned out another outstanding product and I’ll take you through this excellent optic in my upcoming review (July-Aug).