Medication delivery device

A medication delivery device comprising:

• a housing having a proximal end and a distal end,
• a medication receptacle designed to be engaged with the distal end of the housing by engagement of a first engagement feature with a second engagement feature and
• a dosing mechanism comprising
• a piston rod which is moveable in a distal direction for medication delivery and
• a drive device for moving the piston rod in the distal direction for medication delivery;
• wherein
• the medication receptacle comprises an actuation element that brings a guiding element in a guiding position whereby the guiding element guides the piston rod for medication delivery,
• wherein the first engagement feature and the second engagement feature are moveable into engagement by a movement of the medication receptacle which ends in a rotational movement without axial movement of the medication receptacle with respect to the housing,
• the actuation element thereby bringing the guiding element in the guiding position.