The matchlock arquebus is considered the forerunner to the flintlock musket. The matchlock arquebus was the first firearm equipped with a trigger mechanism.. Their principal weapon was a small calibre matchlock firearm, known as an arquebus. In the early 1500s a larger arquebus known as the musket appeared. The heavy arquebus known as the musket appeared in Europe by 1521. The longer weapons were also used to support the arquebus or musket while firing. The name "istinggar" comes from Portuguese word "espingarda" meaning arquebus or musket. Some of the technologies were the arquebus and the musket. An infantryman armed with an arquebus is called an arquebusier. The heavy timber plating deflected arrows and arquebus rounds. The Malay arquebus, istinggar, ulitized this type of mechanism. The caliver was the lighter form of the arquebus. The Japanese were known for their arquebus. This type of arquebus have similarity to the Vietnamese arquebus of the 17th century. Another is a revolving arquebus, produced by Hans Stopler of Nuremberg in 1597.