Merriam Press Military Reprint 9. First Edition (August 2012). Reprint of the November 1944 edition of the War Department Manual for M2 Browning .50 Caliber HB (Heavy Barrel) Machine Gun. Covers description, disassembling and assembling, care and cleaning, functional operation, stoppages, accessories, spare parts, ammunition, training (ground and vehicular mounts), anti-aircraft gunnery, advice to instructors, appendices (preliminary gunner's test, familiarization firing, and aerial target course), and index. 88 illustrations.