: ported barrel can be crafted with the following recipes

Player Recipe
Primary skill used: mechanics(6)
Required skills: gun(3)
Time to complete: 30 minutes
Tools required:
> firearm repair kit (75 charges) OR gunsmith repair kit (75 charges)
> swage and die set
Components required:
> 1x pipe
Byproducts:
(none)
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This recipe can be found in the following books when mechanics is at least the required level:
Mechanical Mastery (level 3)
The Tao of the Handgun (level 4)
Shotguns: The Art and Science (level 4)
The Submachine Gun Handbook (level 4)
FM 23-16 Army marksmanship manual (level 4)