High capacity magazine with multiple springs

摘要

A high capacity box magazine is provided. A plurality of nested followers may be adapted to nest one within another and a plurality of springs may be configured to nest one within another to facilitate the advancement of cartridges within the box magazine to a firearm. A spring cup or cups may be used to nest additional springs that work in series and are nested within each other to further reduce the required height of the springs. The reliability of a conventional lower capacity box magazine may be maintained or exceeded without requiring significantly greater length in order to accommodate the increased capacity. The high capacity box magazine typically requires less frequent magazine changes than conventional lower capacity box magazines.

主权项

1. A magazine comprising:
an outer follower; an inner follower adapted to nest at least partially within the outer follower; wherein the outer follower is adapted to cooperate with the inner follower to support four columns of cartridges when the outer follower and the inner follower are nested so that the outer follower supports three of the four columns of cartridges and the inner follower supports one of the four columns of cartridges when the outer follower and the inner follower are nested; and wherein the inner follower is adapted to support two columns of cartridges when the outer follower and the inner follower are not nested.