#action_mechanism__action  the operating part that transmits power to a mechanism; "the piano had a very stiff action"
  supertype:  mechanism  device consisting of a piece of machinery; has moving parts that perform some function
  part:  key.lever
  part of:  gun  keyboard
  subtype:  gunlock__firing_mechanism  the action that ignites the charge in a firearm
     subtype:  flintlock  a gunlock that has flint embedded in the hammer; the flint makes a spark that ignites the charge
     subtype:  wheel_lock__wheellock  an obsolete gunlock using flint and a revolving wheel
  subtype:  movement.action_mechanism  the driving and regulating parts of a mechanism (as of a watch or clock); "it was an expensive watch with a diamond movement"
  subtype:  piano_action__pianoaction  action consisting of a system of levers that move a felt hammer to strike the strings when a key is depressed
  subtype:  pump_action__slide_action__slideaction  action mechanism in a modern rifle or shotgun; a back and forward motion of a sliding lever ejects the empty shell case and cocks the firearm and loads a new round

No statement uses or specializes action_mechanism; click here to add one.