All of the required metal tubes for the barrels and gun cradles were purchased from firms in the United Kingdom; other components such as breeches and recoil mechanisms were ordered from firms in Germany, France, Spain, Switzerland, and Italy.
All of the required metal tubes for the barrels and gun cradles were purchased from firms in the United Kingdom, including Sheffield Forgemasters, South Yorkshire. Other components such as breeches and recoil mechanisms were ordered from firms in Germany, France, Spain, Switzerland, and Italy.