pump action

Noun
  1. 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 (synset 104028828)
    is a type of: action, action mechanism - the operating part that transmits power to a mechanism
    is a part of:
    • rifle - a shoulder firearm with a long barrel and a rifled bore
    • scattergun, shotgun - firearm that is a double-barreled smoothbore shoulder weapon for firing shot at short ranges
    same as: slide action

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