An automatic injection training device is presented having an elongated housing having a tubular demo container axially and rotationally fixed relative to the elongated housing and having a tubular wall, a reloadable plunger assembly having a plunger which is movable in the demo container between a first and a second position and a first energy accumulating member that moves the plunger from the first to the second position, an actuation assembly that holds the plunger in the first position, a biased needle cover that is movable in relation to the housing from an extended position to a retracted position and from the retracted position to the extended position, wherein the needle cover member interacts with the actuation assembly for releasing the plunger when the needle cover member is moved distally.