This product includes guns in a pack of 16. That is usually a good standard number for aftermarket weapons of the era.
Weapon used in Bellerophon, St Vincent, Neptune, Colossus, Orion and King George V (1911) battleship classes; Lion class & Queen Mary battle cruisers; Boadicea & Active class scout cruisers; Town class (WW1- Bristol group) light cruisers. Other smaller warships equipped with the weapon as well.
