MACHINE GUN AND FEED SYSTEM THEREFOR

摘要

An externally powered twin-barrel machine gun includes a shuttle (42) having two firing chambers (64), 66). The shuttle linearly moves between two positions so that the firing chambers are alternately fed a round of ammunition and discharged. A feed system (21) has a pair of augers (23, 24) each with a helical groove (26) therein which receives a round of ammunition which obtains a dwell position on a zero pitched section (28) of the grooves. A ramming system (91) rams a round of ammunition to the firing chamber aligned therewith and simultaneously ejects any spent cartridge through a forward aperture (62) in the housing (16). The spent cartridge is frictionally engaged by an axially aligned acceleration belt (76) which quickly withdraws the spent cartridge from the firing chamber and accelerates it onto a deflection cam (88).