Shotgun 52 is a medium-close range high damage weapon that can be used to eradicate Raiders. Use this weapon very carefully as it is diffuse and not as a straight assault rifle, use it more as a Riot Guards weapon when there are lots of officers easily killing you from a distance as this weapon's range is very unfriendly.
Obtaining
Formerly, this weapon could be obtained through crate in basement. You just have to go through all the obstacles in the basement and you will find a crate containing the Shotgun 52. Now it's no longer, now it will only give you Rifle 52/Glock 52 weapons.