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Cobbled together from a robot's arm-mounted weapon, the Tesla Rifle can shoot deadly arcs of electricity that jump from enemy to enemy, injuring anyone caught in the chain.Loading screen hint

The Tesla rifle is a unique weapon in the Fallout 4 add-on Automatron.


Bearing the unique Lightning legendary effect, it fires an electrical discharge that arcs between targets and uses fusion cells as ammunition. Due to its arcing nature, the Tesla rifle is capable of damaging multiple enemies at once, but with a limited range. It is an ideal choice for close-range crowd control, for example, against feral ghouls.

Weapon modifications

Slot Mod Description Weapon prefix Damage per shot change Fire rate change Range change Accuracy change Magazine capacity (shots per reload) change Weight change Weapon value change in caps Perk needed Components Form ID
Barrel Semi-auto barrel Standard. Adhesive x1
Circuitry x2
Crystal x1
Nuclear material x2
Plastic x6
Screw x3
Automatic barrel Improved rate of fire. Inferior damage and range. Automatic -1 +50 -3 +30 +1.7 +8 Science! 1 Adhesive x2
Circuitry x2
Crystal x3
Fiber optics x5
Gears x4
Plastic x7
Screw x4
Silver x2
Charging barrel Hold fire to charge. Charging +78 -4 +12 -7 +24 Science! 1 Adhesive x2
Circuitry x3
Crystal x4
Fiber optics x8
Plastic x10
Screw x5
Silver x2
Charging shotgun barrel Hold fire to charge, releases shotgun blast. Charging +98 -4 -12 -57 -7 +1.2 +16 Science! 2 Adhesive x4
Circuitry x4
Crystal x6
Fiber optics x16
Fiberglass x10
Gold x3
Screw x6
Spring x2
Charging lob barrel Release electrified traps. Charging +78 -4 -57 -7 +1.2 +20 Science! 2 Adhesive x5
Circuitry x5
Crystal x6
Fiber optics x16
Fiberglass x10
Gold x4
Screw x6
Spring x2
Sights Standard sights Standard. Steel x2 xx002480
Reflex sight Better focus and sighted accuracy. Tactical +6 +0.7 +18 Adhesive x2
Fiber optics x2
Fiberglass x2
Glass x2
Nuclear material x1
Screw x2
Silver x1


It can be looted from Ivey at the end of the quest Headhunting in the Fort Hagen hangar.


  • Victims killed by a critical strike are turned into a blue ash pile, similar to the Institute laser weapons.
  • For charging variants, the weapon glows a greenish-yellow color when fully charged. The origin of the light isn't clear and is easy to miss if one doesn't know to look for it, or in certain lighting. The rifle variant takes approximately three seconds to charge.
  • The Commando perk affects the automatic barrel and the other barrels are affected by the Rifleman perk.
  • When using the rifle in a crowded place, a shot that hits an enemy can arc between friendly NPCs also (with the exception of companions).
  • The charging shotgun barrel sometimes does full damage at any distance because the shots may all jump to one target, then to the next, etc.
  • Shots in V.A.T.S. with a charging barrel deal full charged damage.
  • Critical strikes increase the arc distance slightly and increase the arcing damage as well.
  • The Tesla rifle offers the highest damage-per-shot for all weapons that use fusion cells as ammunition.
  • The Tesla rifle is one of the most efficient weapons in Survival mode, offering high damage and using very lightweight ammunition. Per pound, without damage boosting perks and with the charging barrel, the weapon can deal around 3,000 points of damage per pound of fusion cells. By comparison, a .50 hunting rifle deals 870.