The Leopard 2A7 vehicle is not intended to be optimized for combat in urban terrain, thus it is fundamentally different from the KMW variant, the: 2A7+ (see below). A total of 20 vehicles were provided for converting. It involves former Dutch A6NL models returned by Canada to Germany. The original upgrade to A6M has been extended in coordination with Canada and includes a crew-compartment cooling-system from the Leopard 2 A6M-HEL series, a new 20 kW auxiliary power unit based on the Steyr Motors M12 TCA UI engine,^[​204] the Saab Barracuda Mobile Camouflage System (MCS) with Heat-Transfer Reduction (HTR CoolCam) system,^[​205] a field trial proven combat management and information system (IFIS: Integriertes Führungs- und Informationssystem), onboard network optimization with ultracapacitors in the chassis and turret, a SOTAS IP digital intercom system, a renewal of the fire suppression system in the crew compartment, and the retrofitting of Attica thermal imaging module in the commander optics.^[​41]