Noun
light machine gun
Source: WordNetDesign The AK-47 was designed to be a simple, reliable automatic rifle that could be manufactured quickly and cheaply, using mass production methods that were state of the art in the Soviet Union during the late 1940s. Source: Internet
Generally, the difference between an automatic rifle and a machine gun comes down to weight, cooling system, and ammunition feed system. Source: Internet
The rally, which took place in Nevada, was attended by a small but vocal bunch of Trump fanatics, each one either clutching a semi automatic rifle, a handgun, or a chubby baby. Source: Internet
FM 3-22.68 "Crew-Served Machine Guns", describes how the M249 can be used either as a machine gun or as an automatic rifle: "Both the M249 automatic rifle and the M249 machine gun are identical, but its employment is different. Source: Internet
In fact, many light machine guns (such as the Russian RPK ) are adaptations of existing automatic rifle designs. Source: Internet
Intended originally as an automatic rifle capable of delivering suppressing " walking fire " in the advance, the BAR came to be used in the light machine gun role. Source: Internet