Patent ID: 7580220

Claim:
A cartridge magazine for storing at least one cartridge comprising: a body having at least one shelf, a first wall and a second wall parallel to the first wall, the first wall positioned a selected width from the second wall that is sufficient to accommodate a cartridge, the second wall including a surface defining an opening, the first wall, second wall, and at least one shelf defining a chamber for the cartridge; a retention member movable with respect to the body operating such that the retention member extends a first portion through to a travel inhibit position, the retention member having a portion disposed outside the chamber operable to retract the first portion from the travel inhibit position; and a pivot point extending from the body and disposed outside the chamber, the first portion including a friction pad, the retention member comprising a lever rotatable mounted to the pivot point and having a spring member operating in which the lever extends the friction pad through the opening such that the portion disposed outside the chamber is operable to retract the friction pad from the opening.