diameter of 1.1 in (28 mm) and barrel caliber of 75 (1.1inches × 75 = 82.5 in (2.1 m)). The gun was designed to replace the M2Browning and four barrels
British .303 inch (7.7 mm) round and named "Browning .303 Mk II" in British Service. It was essentially the 1930 Pattern belt-fed Colt–Browning machine gun
by John Browning. While similar to Browning's M1919 Browning machine gun, which was chambered for the .30-06 cartridge, the M2 uses Browning's larger and