Gun magazine with two-stage spring

Abstract: An ammunition clip is provided for supplying cartridges to a firearm. The ammunition clip includes an elongated housing having an internal chamber for holding a plurality of laterally aligned cartridges, said elongated housing having a loading end and an opposing end, a movable carriage disposed within the internal chamber for urging the aligned cartridges towards the loading end and a spring that urges the movable carriage towards the loading end, said spring being disposed completely outside the internal chamber, said spring being coupled on a first end to the elongated housing and on a second end to the movable carriage and being operatable in a direction of spring pressure that is parallel to a longitudinal axis of the longitudinal housing.