An ammunition carrier assembly includes a first plate having a first portion and a second portion, where the first plate is folded so that the second portion faces the first portion and the second portion extends from a fold along part of the first portion. A second plate is configured to be fixedly attached to the first plate. The second plate has a planar portion and a hub that extends away from a face of the planar portion. The hub defines openings in opposite sides of the hub. The first plate is sized and configured to be installed on a panel of an ammunition container such that the panel and part of the second plate is between the first and second portions of the first plate. The assembly can be part of a system that includes a magazine well attached to a machine gun.