Abstract: A charger for a firearm comprises a body, a movable internal diverter and an advancing member. The body has at least first and second cartridge holding areas that are arranged parallel to each other and are configured to receive and store cartridges in an end-to-end orientation. A first end of the body has a cartridge opening through which cartridges can be loaded into and unloaded from the charger and a receiver insert shaped to fit into a receiver of the firearm. The movable internal diverter is positioned in the body and extends at least partway between the first and second cartridge holding areas to separate the first and second cartridge holding areas from each other. The advancing member is accessible from an exterior of the body and has an engaging member extending within the body and configured to contact a cartridge in one of the first and second cartridge holding areas.