A device and method store, mix, and apply polymethylmethacrylate bone cement, and comprise a first container (51) for a first pasty component of the bone cement, a dispensing plunger (54) that is arranged such that it can be shifted in the first container (51) for pressing the content of the first container (51) through a dispensing tube (62) situated opposite from the dispensing plunger (54), whereby the dispensing tube (62) is arranged such that it can be rotated and shifted in longitudinal direction through a feed-through in a side of the container (51) opposite from the dispensing plunger (54), and a mixing facility (72) for mixing the content of the first container (51), whereby the mixing facility (72) is arranged in the first container (51) and is secured to the dispensing tube (62), such that the mixing facility (72) can be moved in the first container (51) by moving the dispensing tube (62) in order to mix the content of the first container (51), whereby a closure (71) that can be opened is arranged on the end of the dispensing tube (62) pointing into the inside of the first container (51) and closes the dispensing tube (62), and an axially mobile core is arranged in the dispensing tube (62), and a second container for at least one second component of the bone cement is formed by the space between the closure (71) and the core in the dispensing tube (62), whereby the closure (71) of the second container can be removed from the first end of the dispensing tube (62) through an axial motion of the core and thus the second container can be opened with respect to the first container (51) such that the contents of the second container and of the first container (51) can be mixed with each other in the first container (51), whereby at least one boundary surface of the first container (51) is formed by a mobile volume compensation element (56) and the closure (71) is connected to the dispensing tube (62) by means of a deformable connection (74) such that the closur
