Originally A672 are never design to be handheld automatic shotgun. The gun actually design in part of anti-drone automatic turret system mouth on vehicle. Which design to use 12g shotgun shell to kill the incoming drone. One of the reequipment of the gun in this system is it need to be belt-fed shotgun. So the crew in vehicle don't have to expose themself often to reload the turret. The development of the turret are fine. But it just about the time that someone going to ask. "What if i want it on my shoulder?". Of cause someone did. So that why A672 is a thing.

Since this gun are never had handheld concept in mind. the work is somewhat 'questionable'. It an short recoil operated. It have lifter just like normal pump-action shotgun. have belt feeder similar in normal belt-fed machine gun. After factory conduct A672 program. they also design box magazine to use with it. they even try to design tube magazine just like traditional pump-action shotgun. But got reject for a fever of box magazine. It is actually a bullpup design since ejecting slot are behide pistol grip but because it pull shell from the front like traditional pump-action shotgun. the magazine need to be in front.