Final Judgment

The Final Judgment is a unique weapon in Fallout 4.

Characteristics
Final Judgment is a unique Gatling laser that bears the "rapid" legendary effect. It is the personal weapon of Arthur Maxson who carries it into battle during the quests Airship Down, Rockets' Red Glare, Ad Victoriam and The Nuclear Option for the Brotherhood of Steel.

Due to the way the game calculates bonus percentages, the Rapid affix massively boosts the damage output of a Gatling laser outfitted with the charging barrels mod. Instead of increasing the 25% rate of fire that is left of the standard value by another 25%, resulting in 31.25%, the affix simply adds the two values for a result of 50% of the regular rate of fire and a 100% increase in damage output. This, combined with the quadrupled per-shot damage the charging barrels provide, makes Final Judgement one of the most powerful weapons in the game as it deals extremely high energy damage with a quick rate of fire, has remarkable accuracy and the most cost-efficient ammunition type of any weapon in the game.

Variants

 * Gatling laser - The base variant found throughout the Commonwealth.
 * Aeternus - Unique variant wielded by the Rogue knight during the sixth Amoral Combat repeatable quest.

Locations
Can be obtained by killing Arthur Maxson and looting his corpse during the quests Airship Down, Precipice of War, or Rockets' Red Glare.

Bugs

 * This weapon may not spawn in Maxson's inventory. Cause is unknown. Elder Maxson will use it to attack the player character, but it won't show up in his inventory after his death, so watch it carefully when he dies; the weapon will fall out of his hands and will be available as is.
 * This weapon may not use a fusion core when reloaded, making its use infinite.