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GeoPanther
The three basic group of parts for all modern firearms are: action, stock, and barrel.
The action is the heart of the firearm - the moving parts that load, fire, and eject the shells or cartridges.
The stock serves as the handle of the firearm. It can be composed of one or two pieces and is usually made from wood or a synthetic material.
The barrel is the metal tube that the projectile travels through.

Although firearms have evolved significantly since their inception, the words used to describe their components have remained mostly unchanged. The action, stock, and barrel are the three essential elements of all modern weapons.

Three basic groups of parts are:

  • Action: The moving pieces that load, fire, and expel the rounds or cartridges are referred to as the action.
  • Stock: The firearm's handle is made up of the stock. It is usually made of wood or a synthetic substance and can be made up of one or two sections.
  • Barrel: The projectile goes through the barrel, which is a metal tube.

For more information about modern firearms refer to the link:

https://brainly.com/question/2285825?referrer=searchResults