Water Cooled Machine Gun

Improved air cooled heavy barrel versions came in three subtypes.
Water cooled machine gun. Later this term applied to machine guns that fired bullets larger than those used in the issue service rifles. The vickers machine gun or vickers gun is a name primarily used to refer to the water cooled 303 british 7 7 mm machine gun produced by vickers limited originally for the british army the machine gun typically required a six to eight man team to operate. It has also been used by other nations it was a crew served belt fed water cooled machine gun that served alongside the much lighter air cooled browning m1919 it was used at the battalion level and often mounted on vehicles such as a jeep. These weapons were designated browning machine gun cal.
There was no fixed water cooled version. This may not have been terribly difficult during world war i when movement along the front was restricted to just crossing no man s land into the next series of trenches a hundred yards away. 50 m2 water cooled flexible. When it was decided to try to lighten the gun and make it air cooled its design as a closed bolt weapon created a potentially dangerous situation.
The development of the m1921 water cooled machine gun which led to the m2 meant that the initial m2s were in fact water cooled. Water cooled machine guns as it turned out required water to cool them. One fired one fed the ammunition the rest helped to carry the weapon its ammunition and spare parts. The m1917 browning machine gun is a heavy machine gun used by the united states armed forces in world war i world war ii and the korean war.
And the more you used them the more they needed that water changed out.