Patent ID: 9372040
Filing Date: 2016-06-21
CPC Classification: F41A

Claim Text:
1. A magazine for a firearm, comprising: a magazine shell having a first end, a second end opposite the first end, and a plurality of sidewalls between the first end and the second end, the first end having an opening and configured to attach to the firearm, the second end comprising a bottom plate, at least a first primary sidewall of the sidewalls comprising at least one vertical reinforcement groove each of which extending along a longitudinal direction of the magazine shell; and a magazine sidewall spring receivable in the magazine shell, the magazine sidewall spring having an outer surface contour corresponding to an inner surface contour of at least some of the sidewalls of the magazine shell, the magazine sidewall spring comprising at least one deformable groove each of which corresponding to a respective one of the at least one vertical reinforcement groove of the magazine shell, the magazine sidewall spring configured to provide a side support, by deforming, to one or more ammunition cartridges and exert a force on the one or more ammunition cartridges in directions generally perpendicular to the sidewalls of the magazine shell when the one or more ammunition cartridges are held in the magazine shell and in contact with the magazine sidewall spring.