A removable storage cartridge system may include a linear push-push mechanism comprising a carriage having a lock bar and a lock bar spring, and an enclosure having a mounting bracket having a lock guide. The lock guide is configured to interact with the lock bar and spring such that, in response to a first pushing force, reception of the carriage into the mounting bracket positions the carriage into a locked position within the enclosure and, in response to a second pushing force, the carriage is released from the locked position and ejected from the system.