Executioner

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

The Executioner (displayed in game as the Invader due to a title bug) is a Legendary Hyperion sniper rifle from the base game. It uses a 15-round magazine and favours high fire rate and recoil reduction over per-shot damage. When scoped, it fires tight 5-round bursts that can land multiple critical hits, but its ammo consumption is heavy and benefits from ammo regeneration.