The invention relates to an Apparatus, especially a delivery device, comprising a housing (4100), a retainer (4200, 4200′) for holding a cartridge (4220, 4220′), a cover part (4240, 4240′) for accessing the retainer (4200, 4200′), the cover part (4240, 4240′) being moveable relative to the housing (4100) between an open and a closed position, wherein the apparatus further comprises cover part biasing means for exerting a biasing force onto the cover part (4240, 4240′) in the closed position to bias the cover part (4240, 4240′) inwardly and/or distally against the housing (4100).
