The M142 High Mobility Artillery Rocket System (HIMARS) is a light multiple rocket launcher developed in the late 1990s for the United States Army and mounted on a standard United States Army M1140 truck frame.
The M142 High Mobility Artillery Rocket System (HIMARS) is a wheeled version of the M270 Multiple Launch Rocket System (MLRS). The M142 mounts one pod, which is identical to the pods used by the M270. The windows of the launcher truck are made of glass and layers of sapphire.

M142 was also tested as a common launcher for both artillery rockets and the SLAMRAAM surface-launched variant of the AMRAAM anti-aircraft missile.

In October 2017, a Marine Corps M142 fired a rocket while at sea against a land target for the first time from the deck of the amphibious transport dock USS Anchorage, demonstrating the system's ability to operate while on ships to deliver precision fire from a standoff range against shore defenses. The vehicle's targeting software was reworked so it can better fire while on a constantly moving and maneuvering launch platform.
Specifications
Mass 16,250 kg (35,800 lb)
Length 7 m (23 ft 0 in)
Width 2.4 m (7 ft 10 in)
Height 3.2 m (10 ft 6 in)
Crew 3
Traverse 360°
Effective firing range
2–300 km (1.2–190 mi)
92 km (57 mi), M30/31 GMLRS
Maximum firing range 300 km (190 mi), ATACMS,
Armor light
Main
armament
6 × 227 mm M30/M31 series rockets or
1 × 610 mm ATACMS missile
Engine Caterpillar 3115 ATAAC 6.6-liter diesel
290 hp
Operational
range
480 km (300 mi)
Maximum speed 85 km/h (53 mph)