Hi,
Zonie's list omits another inmportant lock, the Spanish or Mediterranean lock, which was the first to combine the pan cover with steel creating the "frizzen". It dates from 1580's or so until the early 19th century. The French army began wholesale replacing of their matchlock muskets to the true "French" flintlock about 1680 and completed the transition by the early 1700s. Britain followed suit but about 20 years later. In the American colonies, matchlocks were loathed because they did not suit the conditions or forest warfare. Moreover, the Indians were often better armed demanding flint guns from Dutch, French, and English traders almost as soon as they became aware of their existence. Consequently, colonists demanded snaphaunces, early English type locks, and flintlocks during the mid-17th century such that by King Phillip' war in 1675, most colonists were armed with guns using some sort of flint ignition. Wheelocks were also used by colonists but were uncommon. Wheelocks were likely invented by Italians, possibly Da Vinci himself, but Germans really latched on to the idea and produced the most wheelocks. They were popular particularly for rifles from the 1540s until well into the 18th century. Some special military units like guards and riflemen were armed with wheelocks. For example the Hapsburgs created wheelock rifle units in the late 16th and throughout the 17th century to help guard fortifications bordering their Ottoman enemy.
dave