first prototype was soon delivered and testing occurred between July and August 1970, followed by the production of a second prototype in 1971. Two more prototypes were fabricated in 1972. The next year, the vehicle was put into mass production and by 1 May 1974 four of these vehicles had been delivered to the 3rd Artillery Regiment. The missile itself weighs and is long. Using a simplified inertial guidance system and a solid propellant rocket motor, the Pluton has a maximum range of . The second missile system is the AMX-30R (Roland) surface-to-air missile launching system, which began development in 1974. Five vehicles of a pre-series were completed by 1977 and then evaluated, prompting the order of 183 vehicles that same year. The Roland includes a rectangular superstructure, taller than that of both the AMX-30D and the Pluton, which houses the radar system and mounts two launching tubes on either side, with an autoloading system feeding from an eight missile reserve inside the superstructure. The Roland's exploration radar has a detection range of . The third missile system, called the AMX-30SA SAM, was developed in 1975 for Saudi Arabia, to fire the SA-10 Shahine, developed and manufactured by Thomson-CSF; the launching vehicle was heavily based on the AMX-30R. AMX 30 AuF1 canon automoteur The canon automoteur de 155 GCT (for Grande Cadence de Tir, fast rate of fire) was developed based on the AMX-30 chassis to provide tactical artillery support to units in the French Army, who refer to it as the AMX 30 AuF1. The howitzer was 40 calibers long, and was autoloaded allowing it a rate of fire of eight rounds per minute, with a maximum range of with the LU211 round. The turret enables the gun to have an elevation of up to 66 degrees, and allows it to traverse a full 360 degrees. The vehicle carries 42 rounds of ammunition, with combustible cartridge cases. The origins of the decision to design a self-propelled howitzer can be traced back to 1969, with the first prototype completed in 1972. By 1979, seven prototypes had been produced, and six pre-series vehicles, followed by the production of 110 vehicles. This order was later increased to 190. AMX 32 The first prototype of an improved AMX-30 for the export market, known as the AMX-32, was unveiled in June 1979. Originally intended as an alternative for the AMX-30B2, and deliberately imitating the