Used in almost every UK (and other) warship of WWII. It was used in Hood, Rodney, Warspite and other British battleships, County class heavy cruisers, other cruiser and destroyer classes (e.g. Polish destroyer Blyskawica).
The set includes turned brass barrels. It is very simple to use in Your model, and makes it extremely realistic. Simply cut off the original plastic barrel and drill a hole in the remaining part and insert the metal barrel using Cyanoacrylate adhesives.