Actually good for the same reason WA-2000 and M14 are. Sheer RoF with decent damage. The only 4 star rifle worth using by default who does not require you to jump through hoops to even matter.

G43 is similar to M14 in night battles, but with a RoF skill instead of damage. Was quite usable as a starter night rifle, and better than nothing, but you should really try to get a better one.