Final Judgment

The Final Judgment is a unique weapon (Gatling laser) in Fallout 4 that is carried by Arthur Maxson during the quest Airship Down.

Characteristics
Functions relatively the same as a standard Gatling Laser albeit with bonus 25% faster fire rate and 15% faster reload. It uses fusion cores as ammo. With the overcharging barrels subtracting 75% of the rate of fire, the additional 25% rate of fire from the Legendary Modification yields only 50% rate of fire.

Variants

 * Gatling laser

Locations
It is carried by Arthur Maxson during the quest Airship Down. If you are currently siding with the Minutemen and you want to obtain this weapon without siding with the Brotherhood of Steel, just continue the Railroad quests until you receive the quest Precipice of War, but do not go to Police Station. Instead go to The Prydwen, and kill Elder Maxson in order to receive Final Judgment.

Alternately you can still acquire the weapon after completing Precipice of War by continuing with Rockets' Red Glare; engage the Brotherhood of Steel members in the main deck area, plant the explosives, and then you should get ambushed by Maxson and two unnamed Brotherhood of Steel members (one will have power armor and a Gatling laser) as you exit the Prydwen via the command deck. Be prepared as they'll open fire as soon as loading completes, there's very little cover available, and the energy weapons can deplete your health very quickly.

Maxson also uses it during The Nuclear Option.

Bugs

 * This weapon may not spawn. Cause is unknown. Elder Maxson may use it to attack the player, but might not show up in his inventory after his death. It may spawn behind couch.
 * Reloading may not correctly consume fusion cores. If you reload the weapon before fully emptying the magazine, the game will never decrement your total number of fusion cores, effectively allowing infinite ammo.