British version of US Browning .30 chambered for the British .303 round, and was used as a basic fighter aircraft gun.
Version with flash hider used mostly as a defensive (flexible) weapon on bombers (Lancaster, Wellington, Defiant and other), but also as a offensive (fixed) weapon (e.g. on Mosquito, Gladiator).
Set includes four turned brass barrels with sloted cooling jacket. 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 plastic parts and insert the metal barrel using Cyanoacrylate adhesives.