THE ORIGINAL CREATOR OF THIS WEAPON IS A GUY CALLED "PETE" FROM GAMEBANANA.COM 

THIS WEAPON IS A SKIN FROM CS SOURCE AND BE CHANGED TO FALLOUT ENGINE BY CLINT1337WOOD

FIXED ERROR "NO WEAPONS IN HAND" AND CHANGED THE "POOR" SOUND EFFECTS SHOTGUN BY MAPCRJ

TO INSTALL THIS MOD COPY ALL CONTENT INSIDE OF FOLDER "Franchi SPAS-12" AND PUT IN "C:\Program Files (x86)\Bethesda Softworks\Fallout 3\Data"

ACTIVE MOD IN FALLOUT LAUNCHER > DATA FILES

CAN BE FOUND 

Craterside Supply

Flak and Shrapnel's

The Citadel Laboratory Shop

Lydia Montenegro's Shop at Tempenny Tower