https://destinytracker.com/destiny-2/db/items/925326394-black-scorpion-4sr You can pull it out from your Collection if you've already found it in the past. There are two of them: one with the Forsaken Symbol on it which has random Perks (so you can't take it) and one without it and a fix Roll. This is what you're looking for. It is pretty good and does is job pretty well. Auto-fire, 19 shots in the Magazine, really fast. Give it a try. It is a decent alternative to the MIDA, Jade Rabbit ecc.
Black Scorpion has been one of my favorite weapons since it's been introduced. The one on my hunter is my favorite.