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.
Answer:
I believe that's true.
Explanation:
The three rock types are igneous, metamorphic, and sedimentry rocks. The processes that change them into eachother are crystalization for igneous, metamorphism for metamorphic rocks, and erosion and seddimentation for sedimentry rocks. Any rock can transform into each other through one or more of these processes.