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The M142 HIMARS (High Mobility Artillery Rocket System) is a lighter version of the M270 MLRS multiple launch rocket system. It is intended for the airborne troops and marines. It entered service with the US Army and Marine Corps in 2005. A total procurement of 900 launchers is planned. It has been exported to Jordan (12), Singapore (18) and the United Arab Emirates (20). Some other export customers are considering to purchase this system.
The HIMARS fires the same rockets as the M270 MLRS, however it carries only one pack with a total of 6 rockets. It offers half firepower of the M270. A standard 227 mm rocket is 3.96 m long and weights 307 kg. The HIMARS fires a full range of the M270 rockets, including HE-FRAG and cluster. It also fires newly developed extended range guided munitions at a range of 60 - 100 km.
The HIMARS can launch a single MGM-140 ATACMS (Army TACtical Missile System) tactical missile.
The HIMARS is mounted on the FMTV 6x6 five-ton army truck. Vehicle is powered by a Caterpillar 3135 ATAAC 6.6-liter diesel engine, developing 290 horsepower.
Reloading is made by the crew within 5 minutes. It is assisted by an integrated crane. Reload rockets are carried by escorting cross-country truck. Reloading is performed remotely from firing position in order to avoid counter-battery fire.
This artillery system can be airlifted by a C-130 Hercules tactical cargo aircraft.