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1. A dispensing apparatus for mixing and dispensing multi-component masses including a multi-component cartridge or a multi-component syringe having a plurality of chambers, a mixer element having a longitudinal axis and a mixer housing which can be placed over the mixer element, said mixer element and the multi-component cartridge being formed of a single piece, wherein each chamber has a dispensing opening closable by means of closure elements fixed at the mixer housing, wherein an outer surface of the mixer element and an inner wall of the mixer housing have a cooperating guide element which only allows a displacement of the mixer housing at the mixer element along the longitudinal axis of the mixer element and the mixer housing is axially displaceably connected to the multi-component cartridge by a connection element, wherein the multi-component cartridge can be transferred from a closed position locking the dispensing openings of said each chamber into a dispensing position freeing the dispensing openings, characterized in that the guide element is designed such that the mixer housing and the mixer element are only displaceable against one another in an axial direction in the closed position, the dispensing position, and a path between the closed position and the dispensing position, and the connection element is a rotary element, wherein the rotary element, the mixer housing and the multi-component cartridge have a cooperating interaction element which, in response to a rotation of the rotary element, is configured to result in an axial relative movement between the mixer housing and the multi-component cartridge, wherein the rotary element has a rotary cap slot running helically in the longitudinal direction of the mixer element and the mixer housing has a guide element cooperating with the rotary cap slot.
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