: rail-mounted crossbow can be crafted with the following recipes

Player Recipe
Primary skill used: fabrication(4)
Required skills: N/A
Time to complete: 35 minutes
Tools required:
> 1 tool with cutting quality of 1
> 1 tool with hammering quality of 2
> 1 tool with screw driving quality of 1
> 1 tool with bolt turning quality of 1
Components required:
> 1x plank OR 2x heavy stick
> 1x short string OR 50x thread OR 50x sinew OR 50x plant fiber OR 50x yarn
> 1x spring
> 4x scrap metal
> 10x nail
> 2x plastic chunk
Byproducts:
(none)
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This recipe can be found in the following books when fabrication is at least the required level:
The Bowyer's Buddy (level 3)
Zen and the Art of Archery (level 5)
Lessons for the Novice Bowhunter (level 4)