The Woolwich Rotunda Artillery Museum and the States of Jersey lent examples of "Warrior"s original primary guns, the muzzle-loading 68-pounder and the breech-loading 110-pounder, which were used as moulds for fibreglass replicas. The Armstrong guns were built with working breeches; they, and the muzzles of all the guns, had to be sealed to prevent people leaving rubbish in them. Little information was available on the wooden gun carriages despite extensive research, and a prototype had to be developed and tested before they could be built.