Method of manufacturing a device for ejecting a liquid or pasty product, characterized in that it comprises the following steps: drawing a product (11) to be ejected within a volume (10) of a container holder (2a) of the ejection device by means of a pull rod (18) removing the pull rod (18) from the container holder (2a) assembling a rear body (2b) on the container holder (2a) in order to form the ejection device.
