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Percussion lock parts

Percussion Lock Muzzleloader: Also known as a caplock, this was an innovation in 19th-century muzzleloader development.

  • Fulminate of mercury began to replace gunpowder as a priming agent. This explosive, housed in a metal container known as a percussion cap, ignites the black powder when the hammer strikes the cap.
  • The percussion lock is the predecessor of the modern rifle cartridge.