Abstract: A fire extinguishment system may include a fire extinguishment apparatus joined to dry chemical, clean agent and water systems. The fire extinguishment apparatus may include dry chemical, clean agent and water nozzles joined to a housing. The dry chemical nozzle may be a multi-stage nozzle configured to discharge consolidated dry chemical with a substantial charge. The dry chemical nozzle may include chamber segments formed from aluminum, collars formed from stainless steel and positioned between the chamber segments, and a flow disruptor. At least some chamber segments may include rifled surfaces. The dry chemical nozzle may be positioned within the water nozzle to allow water discharged from the water nozzle to at least partially encompass dry chemical discharged from the dry chemical nozzle or positioned offset from the water nozzle to allow for parallel discharge of water and dry chemical streams from the fire extinguishment apparatus.