17th Century Ca. 1600: Air guns with compressed air as propellant in a pressure reservoir are used occasionally. Ca. 1609: Dambach uses grenades filled with lead balls. Before 1615: Apparently the invention of the battery or flintlock by Martin le Bourgeo is from Lisieux in Normandie. 1618 - 1632: Paper cartridges and ammunition bag introduced by King Gustav II. Adolf in the swedish army. 1620: First hinged sights on target rifles. Ca. 1620: The ‘Tschinken’, a light wheel lock gun is becoming popular Ca. 1626: Introduction of leather cannons in the Swedish army, by the English baron Robert Scott. These did not prove successful in the battle of Leipzig and were abolished in 1631.