Flintlock is the general term for any firearm base on the flintlock mechanism. Introduced about 1630, the flintlock rapidly replaced earlier firearm-ignition technologies, such as the matchlock and wheellock mechanisms. It continued to be in common use for over two centuries, replaced by percussion cap and, later, cartridge-based systems in the early-to-mid 19th century. The Model 1840 U.S. musket was the last flintlock firearm produced for the U.S. military although there is evidence obsolete flintlocks were seeing action in the earliest days of the American Civil War. In fact, during the first year of the war, the Army of Tennessee (Confederacy) had over 2,000 flintlock muskets in service. While technologically obsolete, flintlock firearms have enjoyed a renaissance among black powder shooting enthusiasts and many fine flintlock rifles and pistols are being made today.