MGR-1 Honest John

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MGR-1 Honest John
MGR-1A (M31 series) "Honest John" rocket on the M386 transporter/launcher truck of the Royal Netherlands Army
Type	Nuclear-capable surface-to-surface rocket
Place of origin	United States
Service history
In service	1953–91
Used by	Belgium, Canada, Denmark, France, Germany, Greece, Italy, Netherlands, Norway, South Korea, Taiwan, Turkey, UK, and US
Wars	Cold War
Production history
Manufacturer	Douglas Aircraft Company
No. built	7000+
Variants	MGR-1A, MGR-1B, MGR-1C
Specifications (MGR-1A[2])
Mass	5,820 lb (2,640 kg)
Length	27 ft 3 in (8.30 m)
Diameter	30 inches (760 mm)
Wingspan	9 ft 1 in (2.77 m)
Engine	Hercules M6 solid-fueled rocket 99,000 lbf (441 kN)
Propellant	Double base solid propellant[1]
Operational range	3.4–15.4 mi (5.5–24.8 km)
Flight ceiling	30,000 ft (9 km)+
Maximum speed	Mach 2.3

The MGR-1 Honest John rocket was the first nuclear-capable surface-to-surface rocket in the United States arsenal.^{[notes 1]} Originally designated Artillery Rocket XM31, the first unit was tested on 29 June 1951, with the first production rounds delivered in January 1953. Its designation was changed to M31 in September 1953. The first Army units received their rockets by year's end and Honest John battalions were deployed in Europe in early 1954. Alternatively, the rocket was capable of carrying an ordinary high-explosive warhead weighing 1,500 pounds (680 kg).

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