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The Radium Rifle irradiates bullets as they are fired, causing ballistic damage, with an extra kick of radiation damage that is deadly to humans.Loading screen hint

The radium rifle is a weapon in the Fallout 4 add-on Far Harbor.

Characteristics[]

The radium rifle is a pre-War carbine that has been modified to deal radiation damage.

Its regular wooden and steel rifle components have been upgraded with all manner of wiring and circuitry, among them what looks like two sets of gamma rounds on the barrel in front of the ejection port. A crudely made dish fashioned from wire and tin foil surrounds the muzzle on long-barreled variants and is somewhat reminiscent of the gamma gun. With the ported variant of the long barrel, looking at the weapon from the front shows the dish's foil parts forming the well-known radiation warning symbol with the barrel representing the center point.

The radium rifle's upgrade options are largely identical to those of the combat rifle, with the notable differences of requiring much higher levels of the Gun Nut and Science! perks, and the inability to attach a recon scope or a .308 receiver. Its considerable radiation damage per shot makes it more dangerous to regenerating enemies like Legendary enemies, but especially to the Sole Survivor. Enemies without good radiation resistance will succumb to rad poisoning very quickly when under fire from even one radium rifle.

Some downsides to the radium rifle include obstructive iron sights with protruding components, heavy recoil when fired with an automatic receiver, and slow reload speeds, though these can largely be remedied with weapon modifications.

Weapon modifications[]

Receiver
ModDescriptionEffectsDamage changeFire rate changeRange changeAccuracy changeAP cost changePerk requirementsComponents
Standard receiverStandard.Adhesive x1
Circuitry x1
Gears x2
Nuclear material x1
Oil x3
Screw x2
Spring x2
Steel x4
Light frame receiver
(Light)
Lighter weight. Reduced damage.-2Adhesive x1
Aluminum x4
Circuitry x1
Gears x2
Nuclear material x1
Oil x2
Screw x2
Heavy frame receiver
(Heavy)
Heavier weight. Improved damage.+2Adhesive x1
Circuitry x1
Gears x2
Nuclear material x1
Oil x2
Screw x2
Steel x6
Calibrated receiver
(Calibrated)
Better critical shot damage.+1Adhesive x2
Circuitry x1
Gears x3
Nuclear material x2
Oil x3
Screw x3
Steel x6
Hardened receiver
(Hardened)
Better damage.+6Adhesive x3
Circuitry x2
Gears x3
Nuclear material x2
Oil x2
Screw x4
Steel x8
Automatic receiver
(Automatic)
Improved rate of fire. Inferior damage and range.-6+50-12-5Gun Nut 1
Science! 1 to craft
Adhesive x3
Circuitry x1
Gears x4
Nuclear material x2
Oil x4
Screw x4
Steel x9
Armor piercing automatic receiver
(Armor piercing automatic)
Improved rate of fire and armor penetration. Reduced range. Inferior damage.-6+50-12-5Gun Nut 1
Science! 2 to craft
Adhesive x3
Aluminum x8
Circuitry x1
Gears x4
Nuclear material x2
Oil x3
Screw x5
Hair trigger receiver
(Hair trigger)
More sensitive trigger. Better rate of fire.+19-2Gun Nut 1
Science! 2 to craft
Adhesive x5
Aluminum x9
Circuitry x1
Gears x4
Nuclear material x1
Oil x4
Screw x5
Powerful receiver
(Powerful)
Superior damage.+20Gun Nut 1
Science! 2 to craft
Adhesive x5
Aluminum x9
Gears x4
Nuclear material x3
Oil x3
Screw x5
Hardened automatic receiver
(Hardened automatic)
Improved rate of fire. Reduced damage. Inferior range.+50-12-5Gun Nut 2
Science! 3 to craft
Adhesive x4
Aluminum x9
Circuitry x2
Gears x4
Nuclear material x3
Oil x3
Screw x6
Rapid automatic receiver
(Rapid)
Super rate of fire. Inferior range. Inferior damage.-6+73-12-7Gun Nut 2
Science! 3 to craft
Adhesive x5
Aluminum x9
Circuitry x1
Gears x5
Nuclear material x3
Oil x4
Screw x6
Calibrated powerful receiver
(Calibrated powerful)
Superior damage. Better critical shot damage and accuracy.+20+1Gun Nut 2
Science! 3 to craft
Adhesive x5
Aluminum x10
Circuitry x3
Gears x5
Nuclear material x3
Oil x3
Screw x6
Hardened piercing auto receiver
(Hardened piercing automatic)
Improved rate of fire and armor penetration. Reduced damage and range.+50-12-5Gun Nut 2
Science! 3 to craft
Adhesive x6
Aluminum x11
Circuitry x2
Gears x6
Nuclear material x4
Oil x2
Screw x7
Advanced receiver
(Advanced)
Exceptional damage.+33Gun Nut 3
Science! 4 to craft
Adhesive x7
Aluminum x12
Circuitry x4
Gears x6
Nuclear material x5
Oil x2
Screw x8
Powerful automatic receiver
(Powerful automatic)
Improved damage and rate of fire. Inferior range.+10+50-12-5Gun Nut 3
Science! 4 to craft
Adhesive x8
Aluminum x13
Circuitry x3
Gears x6
Nuclear material x4
Oil x3
Screw x8
Barrel
ModDescriptionEffectsDamage changeRange changeAccuracy changeAP cost changePerk requirementsComponents
Standard barrel
(Short)
Standard.Adhesive x1
Screw x3
Steel x3
Long barrelSuperior range and sighted accuracy. Better recoil. Poor hip-fire accuracy.+84+2Science! 1 to craftAdhesive x2
Copper x3
Screw x3
Steel x6
Long ported barrel
(Ported)
Superior recoil, range and sighted accuracy. Poor hip-fire accuracy.+84+3Gun Nut 1
Science! 3 to craft
Adhesive x6
Aluminum x8
Screw x4
Silver x4
Stock
ModDescriptionEffectsAccuracy changeAP cost changePerk requirementsComponents
Short stockExceptional sighted accuracy. Better aim with scopes. Improved recoil and bash.Adhesive x2
Screw x5
Wood x5
Full stockExceptional sighted accuracy. Better recoil and aim with scopes. Improved bash.Gun Nut 1
Science! 3 to craft
Adhesive x4
Screw x6
Wood x7
Markman's stock
(Marksman's)
Exceptional sighted accuracy. Superior recoil and aim with scopes. Improved bash.Gun Nut 1
Science! 3 to craft
Adhesive x5
Aluminum x6
Rubber x2
Screw x6
Spring x3
Recoil compensating stock
(Recoil compensated)
Exceptional sighted accuracy and recoil. Better aim with scopes. Improved bash.+2Gun Nut 1
Science! 3 to craft
Adhesive x6
Aluminum x7
Rubber x3
Screw x8
Spring x6
Magazine
ModDescriptionEffectsAmmo capacity changeAP cost changePerk requirementsComponents
Standard magazineStandard.Adhesive x4
Nuclear material x1
Screw x3
Spring x3
Steel x5
Large magazine
(High capacity)
Superior ammo capacity. Inferior reload speed.+20Science! 2 to craftAdhesive x5
Nuclear material x2
Screw x4
Spring x5
Steel x6
Quick eject mag
(Quick)
Superior reload speed.Gun Nut 1
Science! 3 to craft
Adhesive x6
Aluminum x3
Nuclear material x1
Oil x3
Screw x3
Spring x6
Large quick eject mag
(Quick high capacity)
Superior ammo capacity. Improved reload speed.+20Gun Nut 2
Science! 4 to craft
Adhesive x7
Aluminum x10
Nuclear material x2
Oil x5
Screw x4
Spring x8
Sights
ModDescriptionEffectsAccuracy changeAP cost changePerk requirementsComponents
Standard sightsStandard.Adhesive x1
Steel x2
Glow sights
(Glow-sighted)
Improved focus and better sighted accuracy.+1Adhesive x2
Nuclear material x2
Steel x2
Short scope
(Scoped)
Improved magnification. Superior sighted accuracy.+16Adhesive x2
Glass x1
Screw x2
Steel x2
Reflex sight
(Tactical)
Better focus and sighted accuracy.+7Adhesive x2
Aluminum x2
Glass x1
Nuclear material x2
Screw x2
Silver x1
Medium scope
(Scoped)
Better magnification. Superior sighted accuracy.+23Gun Nut 1
Science! 3 to craft
Adhesive x3
Glass x2
Screw x2
Steel x3
Long scope
(Scoped)
Superior magnification and sighted accuracy.+36Gun Nut 2
Science! 3 to craft
Adhesive x4
Glass x4
Screw x2
Steel x4
Short night vision scope
(Night-vision)
Night vision. Improved magnification. Superior sighted accuracy.+16Gun Nut 2
Science! 3 to craft
Adhesive x4
Aluminum x4
Circuitry x1
Fiber optics x1
Glass x2
Nuclear material x2
Screw x2
Silver x2
Medium night vision scope
(Night-vision)
Night vision. Better magnification. Superior sighted accuracy.+23Gun Nut 2
Science! 3 to craft
Adhesive x4
Aluminum x5
Circuitry x2
Fiber optics x1
Glass x4
Nuclear material x4
Screw x2
Silver x2
Long night vision scope
(Night-vision)
Night vision. Better magnification. Superior sighted accuracy.+36Gun Nut 2
Science! 4 to craft
Adhesive x5
Aluminum x6
Circuitry x2
Fiber optics x2
Glass x5
Nuclear material x6
Screw x2
Muzzle
ModDescriptionEffectsRange changeAccuracy changePerk requirementsComponents
No muzzle
Compensator
(Compensated)
Improved per-shot recoil. Improved recoil control. Reduced range.-12+2Gun Nut 1
Science! 3 to craft
Adhesive x3
Aluminum x4
Nuclear material x1
Muzzle brake
(Muzzled)
Exceptional recoil control. Better per-shot recoil. Inferior range.-18+2Gun Nut 1
Science! 3 to craft
Adhesive x4
Aluminum x5
Nuclear material x1
Suppressor
(Suppressed)
Suppresses sound from firing. Exceptional per-shot recoil. Improved recoil control. Poor range.-30+2Gun Nut 1
Science! 4 to craft
Adhesive x5
Aluminum x7
Nuclear material x1
Plastic x4
Screw x3

Variants[]

Locations[]

  • Frequently carried by Children of Atom on the Island, especially by Zealots in and around the Nucleus.
  • Several rifles can be found lying around in Children of Atom territory.
  • Can be purchased from weapon vendors across the Island.
  • One can be found in the cabin at Kawaketak Station.

Notes[]

  • With this weapon, there is no moving bolt involved in cycling the action. Instead, the entire front of the barrel gets pushed back into the upper receiver. This can be seen via the handle welded onto the side of the barrel, that is charged back when cycling the bolt.
  • The "long" barrel modifications do not actually increase the length of the rifle's barrel but instead fix a foil dish to it.

Behind the scenes[]

Radium is a chemical element well known for being highly radioactive.

Bugs[]

PCPC Playstation 4Playstation 4 The fire rate for the various automatic receivers will read as 300 in the inventory displays (personal, container, merchant), with the correct value (90) being shown only in the workbench display. Contrary to reports based on the bugged display values, the automatic Radium rifles do not have a faster rate of fire than a minigun. It is unknown what causes or remedies this for now, but has been noted by various players.[verified]

Gallery[]

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