The GCT 155mm AUF1 is based on the AMX-30 main battle tank (MBT) chassis and equipped with a 155mm 39-caliber gun with an auto-loading system, giving a rate of fire of 8 rounds per minute, and a sustained rate of fire of 6 rounds in 45s.
A battery of 8 AUF1s from the French Army's 40em Regiment d'Artillerie was deployed in support of the Rapid Reaction Force on Mount Igman during the 1995 NATO bombing campaign in Bosnia and Herzegovina.