BRITISH SERVICE VICKERS GUNS
Gun, Machine, Vickers G.O. .303-inch, No. 5, Mk. I:

Cat. No.	Introduction	Obsolescent	Obsolete	Remarks
	L. of C. B.6510 G/06135/40 14th January 1941			Converted from No. 1 and No. 3 for Quadrouple Mounting.

(Source: CIA, 1950)