A cartridge handling apparatus includes cartridge storage magazines which
define cartridge storage slots therein. A projecting element positioned on
a back inside wall of each of the storage slots of the storage magazines
fits into a recess in the cartridge when the cartridge is oriented in a
proper orientation so as to permit the cartridge to be fully inserted into
the storage slot in the proper orientation. The projection prevents full
insertion of the cartridge in the cartridge storage slot when the
cartridge is not in the proper orientation. By changing the orientation of
the projection, the storage slot accepts cartridges in a different
orientation as the proper orientation. A snap lock is provided on each of
the storage slots to engage the cartridge when fully inserted therein.
