FALLOUT 4 ALIEN CRASH SITE LOCATION - ALIEN BLASTER - XBOX SERIES X 4K 60FPS
This video shows the location of the Crash Site, as well as obtaining the alien blaster. Unfortunately, you cannot go into the UFO Ship. But the alien for the crash site is close, and that is how you get the blaster. It isn't labeled on the map, but I'll show you where its at.