Magazine holster for quick loading of firearms

A holster assembly is configured to detachably join a magazine to a waist of a user. The holster assembly includes an upper holster assembly further including an upper holster assembly internal channel, wherein the upper holster assembly internal channel is joined to the magazine. A tongue further includes a button wherein the button extends below a lower edge of the upper holster assembly internal channel. A lower holster assembly is detachably coupled to the upper holster assembly and includes a lower holster assembly internal channel. The lower holster assembly internal channel is immediately adjacent to the magazine. A tongue receiver has a tongue receiver opening. The tongue receiver opening extends above an upper edge of the lower holster assembly internal channel.