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This website is updated reguarly (weekly at minimum).
Ryobi 524 machine specs:
524HXX: a Ryobi HXX machine has full automation, including place cocking.
524HX: a Ryobi HX machine is semi-automated, not including plate cocking
524H: a Ryobi 524H may or may not have a console. If it does have a console, it only has minium control.