Abstract: A hand held two part material meter-mix-dispenser apparatus has a hand held body including a base mounting an air driven cylinder means in association with a double plunger assembly and a pair of cartridge receiving barrels with means for hingedly mounting the barrels to the base so that when in hinged open position, the barrels are positioned to easily receive a pair of cartridges containing different parts of a material to be mixed and when moved into hinged closed position automatically locate such cartridges in association with the double plunger assembly for simultaneous exuding of the materials of the two cartridges through a mixing head mounted on the apparatus body. Air driven mixing means are provided in the mixing head to dynamically mix the materials under pressure being forced through the mixing head via disposable conduits running from the two cartridges during operation of the dual plunger assembly.