By commission from FMV: KC Vapen, a study concerning the refurbishing old gas generator charges for RBS12 gas generator has been carried out by FOI Weapons and Protection Division, Department of Warheads and Propulsion. The following has been investigated: o The removal of old propellant charges and their replacement with novel charges consisting of ammonium nitrate/HTPB propellant. o The igniter system. o Methods for testing the new propellants. o Methods for producing and testing new propellant charges. o Testing of the complete gas generation assemblies. o Qualification program.