Ring C-UxS is a counter-uncrewed systems (C-UxS) electronic warfare product line developed by Regulus Cyber. It uses RF-based techniques including GNSS spoofing, GNSS jamming, and datalink manipulation to detect, classify, and neutralize commercial and military drone threats approaching by air, land, or sea. The Ring family consists of three variants: - Ring 3: A GNSS spoofing effector with no internal detection capability. Designed for OEM integration or standalone use. Supports manual or automatic triggering. Spoofing range: up to 2 km omni-directional, 4 km directional. - Ring 4: Adds internal omni RF detection and classification (up to 1.5 km) to the Ring 3 form factor. Provides "detect and defeat" capability for troop, point, and vehicle protection. - Ring 5: A full electronic warfare point defense suite combining internal passive RF detection and classification (up to 1.5 km), GNSS spoofing and jamming across all major constellations and frequencies (up to 2 km), and smart FPV datalink jamming (up to 1 km). Supports up to 5 ISM bands simultaneously. Ring is rated at Technology Readiness Level 9 (TRL-9) and is combat-proven against Group 1 through Group 3 uncrewed platforms. Deployment configurations include omni-directional, directional wide, and directional narrow variants for tactical and strategic use cases. The system can be deployed stationarily or on-the-move, on land or maritime platforms. Ring includes a C2 interface with a JSON-based API for integration with external C2 systems. Operational modes include Control, Hold, Push Back, Divert, and No Flight Zone (NFZ), with support for manual triggering or automated threat-based response.