There is provided an injection device 110 comprising a housing 112 adapted to receive a syringe having a discharge nozzle, the syringe being moveable in the housing on actuation of the injection device along a longitudinal axis from a retracted position in which the discharge nozzle is contained within the housing and an extended position in which the discharge nozzle of the syringe extends from the housing through an exit aperture 118 at a distal end of the device, a sliding component 126 which extends, when in a first position, from the aperture, and is movable towards the housing into a second, retracted, position, wherein the sliding component comprises, at its distal end, a removable contact element 220.
