The improved long barrel is a weapon mod for the Institute laser and the laser gun in Fallout 4. It requires at least rank 2 of the Science! perk.


The improved long barrel provides better damage and range, improved sighted accuracy and recoil in exchange for reduced ammo capacity and poor hip-fire accuracy.


The recipe for this weapon mod varies depending on the weapon for which it is made:

Crystal (1-4)
Glass (0-4)
Screw (4)
Silver (4)
Icon range
Icon level
Improved long barrel (1)

Weapon Science! Adhesive Circuitry Crystal Fiber optics Fiberglass Glass Screw Silver
Institute laser 2 4 3 4 6 5 0 4 4
Laser gun 2 4 3 1 6 5 4 4 4


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