From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Ministry of Aircraft Production letter ordering the cessation of development on the .5 inch machine gun.
| Identifier | ExFiles\Box 176\1\ img207 | |
| Date | 1st July 1941 | |
| Copies to: Hs.{Lord Ernest Hives - Chair} Rm{William Robotham - Chief Engineer} C O P Y. Ministry of Aircraft Production, Millbank, S.W.1. 1st July, 1941. Gentlemen, .5 inch Rolls-Royce Machine Gun. I am informed by the Secretary, O.B. that you have been asking for 2,000 rounds of .55 inch Service ammunition to carry out firing trials with this calibre in your .5 inch machine gun. I am directed to say that no requirement exists for a development of this nature, and it is requested, therefore, that any work which may be in hand on this development should be stopped. I am, Gentlemen, Your obedient Servant, C.N.H. Bilney. Deputy Director of Armament Development (Guns). Messrs. Rolls-Royce, Ltd., Derby. | ||