Abstract: A clip for the retention of a round of ammunition in a desired position in a barrel is described, the clip being manufactured from a plastics material and comprising a generally cylindrical body portion; the body portion having a plurality of generally radially and axially directed grooves therein, said grooves being adapted to engage the tail fins of an associated round of ammunition; engagement means extending at least part of the way around said body portion, said engagement means having a greater diameter than that of the body portion and being adapted to engage with a recess at the breech-end of an associated gun barrel to prevent forward movement; and a substantially central aperture to allow access to the propellant charge of the associated round of ammunition.