It seems that GWS shoots 5 bullets in a single shot and shoots twice in a bust.
But It can't be true when considering GWS's massive damage.
I think GWS shoots 2~4 times in a bust by random. If it busts 10 bullets in a bust, that's not very impressive. but if 20 bullets in single bust, It can be havoc.
How do you think about my guess?