Farang is a Persian word that originally referred to the Franks and later came to refer to Western or Latin Europeans in general. The word is borrowed from Old French franc or Latin francus, which are also the source of Modern English France, French.

A breech-loading swivel gun was a particular type of swivel gun and a small breech-loading cannon invented in the 14th century. It was equipped with a swivel for easy rotation and was loaded by inserting a mug-shaped device called a chamber or breech block, filled with gunpowder and projectiles. It had a high rate of fire, as several chambers could be prepared in advance and quickly fired in succession and was especially effective in anti-personnel roles. It was used for centuries by many countries of Europe, Asia and Africa.