( 12 gauge pistol can be crafted with the following recipes

Autolearned
Player Recipe
Primary skill used: mechanics(3)
Required skills: gun(2)
Time to complete: 180 minutes
Tools required:
> 1 tool with fine metal sawing quality of 1
> 1 tool with fine screw driving quality of 1
> 1 tool with fine bolt turning quality of 1
> 1 tool with glare protection quality of 2
> acetylene torch (20 charges) OR arc welder (100 charges) OR makeshift arc welder (150 charges) OR integrated toolset (150 charges)
Components required:
> 1x pipe
> 1x plank OR 1x heavy stick
> 2x scrap metal
Byproducts:
(none)
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This recipe can be found in the following books when mechanics is at least the required level:
DIY Compendium (level 2)

Player Recipe
generic_guns Obsolete
Primary skill used: (0)
Required skills: N/A
Time to complete: 0 seconds
Byproducts:
(none)