History of the firearm
The history of firearms begins in 10th-century China, when tubes containing gunpowder and pellet projectiles were mounted on spears to make portable fire lances, operable by one person. This was later used effectively as a shock weapon in the Siege of De'an in 1132. In the 13th century, fire lance barrels were replaced with metal tubes and transformed into metal-barreled hand cannons. The technology gradually spread throughout Eurasia during the 14th century and evolved into flintlocks, blunderbusses, and other variants. The 19th and 20th centuries saw an acceleration in this evolution, with the introduction of the magazine, belt-fed weapons, metal cartridges, and the automatic firearm. Older firearms typically used black powder as a propellant, but modern firearms use smokeless powder or other propellants. Most modern firearms have rifled barrels.