The weapon was unusual among contemporary machine guns by its use of a lever-delayed blowback operation. When firing, the pressure pushing the case head rearward initiated an impulse on a cam that sent the bolt carrier rearward. After a certain distance, a link (in this case the firing pin) pulled the bolt head, hence extracting the spent case. Since there was no
primary extraction, the chamber was fluted to allow powder gases to flow back, unsticking the case from the wall chamber like on
Heckler & Koch type roller-delayed blowback weapons. The machine gun could be used as a LMG with a bipod or as a medium machine gun with a tripod. When used with a tripod for continuous fire, the gun was fitted with a heavier barrel. In the LMG configuration, the machine gun was a relatively light weapon to carry. The lower receiver of the weapon came from an
RPD with a modified stock. ==See also==