The gun that was used during the Coronado expedition by the soldiers, this certain weapon had two different firing systems.
The weapon was used in longer range combat by foot soldiers against hostile enemies on the expedition.
This item was brought by the Spaniards to Mexico. This gun had two different firing methods. The first method being mechanical, it had a small string that was soaked in salt pyrites and dried. Then when lit the weapon would fire. The second would be wheel lock, a wheel inside the gun would be sprung at a fast pace, igniting the pyrites. This made a spark which fired the gun. Most of these guns were made with a metal barrel and a wooden butt. The gun itself was 2.8 ft. long. There are many of this guns available in museums and since parts of the guns were found on Coronado dig sites, researchers believe they were used on the expedition.
Serven, James E. “THE GUN—AN INSTRUMENT OF DESTINY IN ARIZONA.” Arizoniana 5, no. 3 (1964): 14-28. http://www.jstor.org/stable/41700721.