This is a 2mm shorter case version of the 30 M1US Carbine (see images) and was produced by RWS sometime before 1970. It is not shown in any known post WW2 RWS catalog. The name implies that it was probably produced for the French market being created to satisfy the French laws not allowing military calibres to be used. It is intended for similar use as the 30-222 SUR-ARMES (FR83) which was also used in modified M1 Carbines.RWS was the only ammunition company that produced this commercially. Not CIP registered until 17-May-91