"Technician" gear set and "Black Powder" weapon skins. Insurgents: "Dealer" gear set and "Damascus" weapon skins.
The .rar extension indicates a compressed archive. A file labeled cannot be opened on its own; it requires all preceding (part01–04) and subsequent parts to be present in the same folder to successfully extract the complete update data. Operation: Livewire | Insurgency Wiki | Fandom Insurgency.Sandstorm.Operation.Livewire.part05.rar
The update featured both free and premium cosmetic sets, including: "Technician" gear set and "Black Powder" weapon skins