Fit perfectly to Mosquito from AIRFIX and other models in 1:24 scale.
Version with flash hider used mostly as a defensive (flexible) weapon on bombers, except of Mosquito, where four Brownings with flash hiders was fixed.
Set includes four turned brass barrels with sloted cooling jacket. Flash hiders are seperate elements, so you can assembly barrels without them. Version without flash hider used mostly as a offensive (fixed) weapon on fighters (Spitfire, Hurricane).
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.