A material bar magazine for guiding material bars on an automatic lathe and loading and/or unloading the automatic lathe, having at least one headstock displaceable along a longitudinal axis of the material bar magazine, the material bar magazine including a material bar-guiding channel system having a channel opening system,
- the channel system of the material bar magazine having a first, outer guide channel and a second, inner guide channel mounted inside the first guide channel such that it can move relative thereto along the longitudinal direction, the second, inner guide channel couplable to the headstock of the automatic lathe and, as a result of a change in position of the headstock along the longitudinal axis of the material bar magazine, movable synchronously therewith in overrun condition along the longitudinal axis and relative to the first guide channel.