The Browning M2, or "Ma Deuce" as known by the troops, is the most proliferous heavy machinegun of the Cold War, with a service time of nearly half a century across the entire globe. Although originally designed as an anti-air and anti-tank weapon, it was soon found to be most effective at turning infantry to mush.
The Browning M2 is an American 12.7mm heavy machinegun from WW2. Its most common variants are the M2HB (Heavy Barrel, air-cooled ground forces version) and the AN/M2 (Army-Navy, also air-cooled, for aircraft). It is the single most common weapon of its type in the world, used in every single scenario possible. Unsurprisingly, the M2 is also the most common HMG in Oceanyka.