Hed Shoter!

root@bandit-db:~$ cat description.txt

A Bandit weapon fitted with a Hyperion barrel, greatly tightening accuracy, reducing recoil, and adding a small critical-hit bonus. In exchange, it gives up some raw damage and a noticeable amount of magazine size, so it works best when you can make the extra accuracy count with steady headshots.

root@hyperion-db:~$ cat notes.txt

It only appears at green rarity or higher and drops from suitable world loot sources.