Machine gun training (supplement) Browning machine gun, caliber .50, HB, M2 ground - USA Basic Field Manual, FM 23-60 Browning machine gun caliber .30, HB, M1919A4 (mounted in combat vehicles) - USA Basic Field Manual, FM 23-50 Browning machine gun, caliber .50 HB, M2 / War Department - USA Field Manual, FM 23-65 Tank training : Volume II-Part III: Pamphlet No. 2: 303-in., vickers machine guns, Marks VI, IVa, IVb, and I Tank training : Volume II-Part III: Pamphlet No. 4: Machine gun mountings and appurtenances for use in armoured fighting vehicles Tank training : Volume II-Part III: Pamphlet No. 5: 5-in. vickers machine gun, Mark V Browning machine gun, caliber .30, HB M1919A4, ground - USA Basic Field Manual, FM 23-45 Browning machine gun, caliber .30, HB, M1919A4, ground - USA Basic Field Manual, FM 23-45 Small arms training : Light machine gun / War Office. Army Council. Vol. I - Engeland Voorschrift, 26/GS Pubns/142 Small arms training : Light machine gun / War Office. Army Council. Vol. I - Engeland Voorschrift, 26/GS Pubns/142 30 Browning Machine Gun - Mechanical Training