Gatling Laser (Fallout 4)

The Gatling laser is a weapon in Fallout 4.

Characteristics
The gun is a large, two-handed weapon consisting of four rotating barrels that fire red laser beams through two lenses. It uses fusion cores for ammunition. Each fusion core provides 500 shots. It has a high rate of fire but low accuracy, making it more useful for large numbers of close enemies.

Automatic reloading behavior can lead to an inventory full of partially-used cores if frequently swapping between weapons.

The Gatling Laser has more damage and accuracy than a tri-barrel minigun, so this is a great weapon should you desire more accuracy and damage per-magazine. It's ammo is considerably more cost-efficient than a minigun's, so this also good for players on a budget that doesn't accommodate for 5mm ammunition, but makes fusion cores affordable.

Weapon modifications

 * ? Receiver mods (several, similar to laser pistol/rifle
 * 2 barrel mods;
 * Standard Barrels - +ROF, -acc, -dmg
 * Charging Barrels - +dmg, +acc, -ROF
 * 2 sight mods;
 * No sights
 * Gat.Las. Reflex Sight
 * 2 barrel mods;
 * No extension
 * Gat.Las. Focuser - +dmg, etc.

Variants

 * Final Judgment

Locations

 * One sold by Proctor Teagan aboard the Prydwen at higher levels. (Level 20)
 * Carried by Brotherhood of Steel Knights & Paladins, if they are wearing power armor at higher levels.
 * Commonly found in Airship Down.
 * One can be found as loot on an enemy, Regi Blattaria, in a crippled house just west of Corvega assembly plant
 * Elder Arthur Maxson carries a unique variant (Final Judgment) during Airship Down.
 * Can be found as legendary loot item above level 37.
 * Higher chance of appearing as legendary loot after level 40.

Bugs

 * When a fusion core is spent fueling power armor, the Gatling laser will behave as if it has no ammo even if there are spare cores. This issue can be resolved by switching to a different weapon and switch back.
 * Should one choose to fire all 500 rounds of the core, upon reloading it will appear as though another core was not used. This is because of a bug caused by the repair bobblehead. Instead of increasing the gatling laser's ammo capacity by 10%, it instead preserves roughly 10% of the fusion core's charge upon expending the 500 shots. This will cause a fusion core with a low charge to be placed in the inventory upon reloading, thus giving the illusion of infinite ammo. However, the cores are, indeed, being depleted of their charges.
 * Should the Sole Survivor switch from the Gatling laser to another weapon, not only will the partially depleted core be dropped in the inventory, but one will also find it does not use another core from the inventory when pulling it back out. This could be exploited to gain as many partially depleted fusion cores as wanted.
 * The legendary prefix, Neverending, causes the Gatling laser to use no ammo. (if only one core present in inventory it uses 1 fusion core for one shot and then goes out of ammo)
 * With an overcharged barrel, it is possible to speed up the rate of fire by switching to third person view mode and crouching. The weapon will fire at an increased fire rate, but still not as close to the unmodded fire rate.
 * Is possible to speed up rate of fire even further by switching to third person view mode and very fast pressing any direction button: W, S, A, D.
 * With an overcharged barrel, it is possible to speed up the rate of fire by spamming the aim/block button while firing.
 * Companions using a gatling laser with charging barrels will still retain the standard barrel's fire rate.
 * Using the charging weapons mod with the Legendary weapon effect "Rapid" will more than double the fire rate rather than the described 25% increase. NOTE: this does not appear to be a bug, but rather a result of the mathematical way the two mods alter the fire rate.