Abstract: A cover assembly that covers a medicament delivery member of a medicament container. The assembly having a housing extending along a longitudinal axis, a proximal end and a distal end. A cover member bi-directionally movable along the longitudinal axis relative to the housing, where the cover member has a tubular portion arranged to protrude from the proximal end of the housing, a biasing element arranged between the housing and the cover member configured to move the cover member, a locking member having a fixed end which is pivotally arranged to the housing and a free end which is releasably connected to the cover member. The cover assembly also has an actuator unit connected to the housing configured to interact with the free end of the locking member such that the locking member is able to lock and unlock the cover member in different positions.