The set includes turned brass early version 20mm Hispano (conical fairings) and Browning .50cal.
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.
Late version of Spitfire E wing You'll find in our set:
AM-32-082 - Spitfire Mk.IXe/XVIe late version (rounded fairings).