Before you can get Fallout 4's Hub Alien Blaster, you need to install the Nuka-World DLC and travel to Nuka-World. You gain access to the entire world space after you defeat Overboss Colter.

Here’s the entire Fallout 4 Map with every main map marker unlocked so you can pin-point the location of your next adventure (we’ve excluded a couple of quest-specific ones which unlock ...