Germany's Diehl Defence Unveils IRIS-T SLS MK4 Next-Generation Mobile Air Defence System with Anti-Drone Capability
German defence contractor Diehl Defence has introduced the IRIS-T SLS MK4, the fourth generation of its highly mobile air defence system. With a range of 12 km and engagement altitude of 6 km, the all-in-one system integrates radar, command-and-control, and launcher on a single vehicle platform, featuring high automation, fire-on-the-move capability, and full NATO compliance.

Highlights
- Diehl Defence unveiled the IRIS-T SLS MK4, the fourth generation of its mobile air defence system, with a 12 km range and 6 km intercept altitude.
- The MK4 integrates radar, C2 systems, and a missile launcher onto a single vehicle, enabling rapid redeployment and reducing crew requirements through high automation.
- The system achieves an eightfold increase in ammunition load compared to earlier versions and is fully compliant with NATO standards and operational requirements.
- IRIS-T SLS MK4 supports modular add-ons including the CICADA anti-drone electronic missile and remotely operated weapon stations for multi-mission flexibility.
- A future fire-on-the-move capability will allow the system to launch interceptors while the vehicle is in motion, further enhancing battlefield responsiveness.
Germany's Next-Generation IRIS-T SLS MK4 Mobile Air Defence System Unveiled
German defence contractor Diehl Defence has unveiled its next-generation high-mobility air defence system, the IRIS-T SLS MK4, designed to protect troops on the move and critical infrastructure from a wide range of aerial threats. As the fourth iteration of the IRIS-T SLS family, the system offers an engagement range of 12 km (approximately 7 miles) and an intercept altitude of up to 6 km (approximately 3.7 miles).
Diehl Defence states that the MK4 integrates radar, command-and-control (C2) systems, and a launcher—complete with interceptor missiles—onto a single vehicle platform, creating a true all-in-one solution. Thanks to its high mobility and compact design, the system can be redeployed within a very short timeframe.
High Automation Significantly Reduces Crew Requirements
A key feature of the IRIS-T SLS MK4 is its high degree of automation, which substantially reduces the manpower required to operate the system while enabling extremely fast response times. Its vehicle-agnostic design concept provides maximum flexibility to accommodate the requirements of different customers.
Diehl Defence also confirmed that the system uses the combat-proven IRIS-T air-to-air missile as its interceptor, with the hardware remaining unchanged. The system will additionally gain fire-on-the-move capability—enabling missile launches while the vehicle is in motion. Furthermore, the system can be integrated with additional interceptors, such as Diehl Defence's own anti-drone electronic missile CICADA, as well as remotely operated weapon stations.
Full NATO Compliance and an Eightfold Increase in Ammunition Load
The SLS system has been fully incorporated into Diehl Defence's multi-layered air defence architecture. The upgrade to MK4 brings the system into complete compliance with NATO standards and operational requirements, including an eightfold increase in ammunition capacity and a corresponding major enhancement in combat effectiveness. The IRIS-T missile continues to serve as the cornerstone of Diehl Defence's ground-based air defence portfolio.
Modular Design to Counter Diverse Threats
Another significant feature of the new system is its modular design. The platform-agnostic architecture allows integration with different vehicle types to meet customer requirements. Diehl Defence noted that additional interceptors—including the CICADA anti-drone interceptor and remotely controlled weapon stations—can be incorporated into the system, extending its mission scope well beyond conventional air defence roles.
Surging European Demand for Modern Air Defence
The unveiling of the IRIS-T SLS MK4 comes at a time of sharply rising demand across Europe and beyond for modern ground-based air defence systems. The IRIS-T family's proven operational track record, combined with sustained investment by nations in multi-layer air defence networks, has positioned the system as a critical component of future NATO and partner-nation air defence architectures.
Combining mobility, automation, modularity, and mature missile technology, the IRIS-T SLS MK4 represents Diehl Defence's latest offering to provide armed forces with a flexible and rapidly deployable air defence solution capable of addressing the evolving aerial threat landscape in an increasingly complex security environment.
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