Doglock

A doglock is a type of lock for firearms that preceded the 'true' flintlock in fusils, muskets, and pistols in the 17th century. Commonly used throughout Europe in the 17th century, it gained popular favor in the British and Dutch military. A doglock carbine was the principal weapon of the harquebusier, the most numerous type of cavalry in the armies of the Thirty Years' War and English Civil War era. Like the snaphance, it was largely supplanted by the flintlock.