M SAM II Air Defense System

Full Specifications

M SAM II Cheongung Air Defense System

The M SAM II, also known as Cheongung II, is South Korea’s next generation medium range air defense system designed to counter aircraft, cruise missiles, and short range ballistic missiles. Built to bridge the gap between short range point defenses and long range systems, M SAM II reflects Seoul’s focus on layered, networked air and missile defense in high threat environments.

Manufacturer and Origin

M SAM II is developed by LIG Nex1, with key contributions from Hanwha Aerospace and the Agency for Defense Development of South Korea. The system is fully indigenous, though its design philosophy aligns with modern Western air defense concepts. It entered service with the Republic of Korea Air Force in the early 2020s and has since gained export success.

Speed and Range

The system uses hit to kill capable interceptors with an estimated maximum engagement range of up to 150 km and an interception altitude of around 40 km. Missile speed is assessed at approximately Mach 5, enabling effective engagement of fast, maneuvering targets, including ballistic missiles in their terminal phase. An AESA radar provides long range detection and multi target tracking.

Cost and Role

While exact pricing varies by configuration, open source estimates place the cost of an M SAM II battery at roughly USD 400 to 500 million. The system is intended to protect critical infrastructure, air bases, and population centers, and is often compared to Patriot class systems at a lower cost point.