The phrase refers to a specific quantity of ignition devices designed for use in muzzleloading firearms, specifically those that utilize a percussion lock system, available for purchase from a major retail corporation. These small, single-use components contain a charge of impact-sensitive explosive. When struck by the hammer of the firearm, the explosive detonates, sending a flame through a nipple into the powder chamber, igniting the main propellant charge and firing the projectile.
These ignition devices play a vital role in the safe and reliable operation of compatible firearms. Their availability, especially from established retailers, contributes to the accessibility of historical shooting sports and hunting practices. Historically, the adoption of percussion ignition systems represented a significant advancement over earlier flintlock mechanisms, offering improved reliability and weather resistance. This shift impacted both civilian marksmanship and military tactics.