Ordnance provision system. [Ordnance catalog (ordnance provision system)]: Group A, Gun, machine, cal. .30, Browning, M1919A4, fixed and flexible, and M1919A5, fixed, and ground mounts, major items, maintenance parts and equipment required for maintenance of gun, machine, cal. .30, Browning, M1919A4, fixed and flexible, and M1919A5, fixed, and mount, tripod, machine gun, cal. .30, M2, addendum; Dec. 8, 1942.