Cat. No. | Introduction | Obsolescent | Obsolete | Remarks |
Section C.1 7.J.1401 |
L. of C. C.1027 270/MG/132 18th January 1945 |
L. of C. C.2630 270/MG/132 12th February 1946 |
L. of C. C.3375 270/Vocab/428 10th November 1947 |
Aircraft gun as No. 1 but with remote control for firing. |