Unlock a Jack-o'-Cannon in Borderlands: The Pre-Sequel - Gearbox Software
SHiFT Codes and Golden Keys - Borderlands 2 Guide - IGN
Shoot your eye out with the Ol' Painful Assault Rifle! Claim these SHiFT Codes to unlock some Mercenary Day loot in Borderlands: The Pre-Sequel. Codes expire Jan 31." : r/Borderlands2
Borderlands Pre-Sequel: Shift Codes - Orcz.com, The Video Games Wiki
Borderlands' Shift Codes: Latest GOTY, Borderlands 2 and Pre-Sequel Codes for Xbox, Playstation & PC
Borderlands: The Pre-Sequel Bloody Harvest SHiFT Codes - Gearbox Software