Volley gun
The Ribauldequin was a medieval version of the volley gun. It had its barrels set up in parallel. This early version was first employed during the Hundred Years' War by the army of Edward III of England, in 1339. Later on, the late Swiss army employed it.
Webley &amp; Scott
In 1910 Webley offered a new automatic for testing, and in 1911 the Webley self-loading .455-inch Mark I was recommended by both the SAC and the Chief Inspector of Small Arms (CISA.) This pistol was adopted by the Royal Navy in early 1912 as the first automatic pistol officially in British service. Later the pistol was also adopted by the Royal Horse Artillery and was issued to members of the Royal Flying Corps.