I've got a weapon here for every situation. Hunting, protection, cold blooded murder, hot blooded murder.
Kill or Be Killed is a shop in Goodneighbor in the Commonwealth.
Run by KL-E-0, Kill or Be Killed is a one stop shop for anyone who needs to go into combat. Weapons, armor, ammunition and more, Kill or Be Killed has it.
The shop immediately opens to KL-E-0's desk, with a power armor station and weapons workbench against the southern wall. A stairway in the back leads up to KL-E-0's minimalistic living quarters, which contains her terminal.
Kill or Be Killed appears only in Fallout 4.