Far Cry 3: Blood Dragon Weapon Modification Unlocks
Fazertron:
Light Barrel – Complete “Tiger Fist” Predator's Path.
Grip – Complete “Unique Dragon Horn” Predator's Path.
Extended Mag – Complete “Everyone's on a Boat” Hostage Rescue.
Full Auto – Complete “Ruining Everything” Hostage Rescue.
Even Larger Mag – Complete “Hunt The Sniper” Predator's Path.
Mag Pouch – Complete “Mind The Teeth” Predator's Path.
Laser Rounds – Unlocked after killing 9 animal types
A.J.M. 9:
Suppressor – Complete “Save a Nerd” Hostage Rescue.
Laser Sight – Complete “Birds With Attitude” Predator's Path.
Larger Mag – Complete “Insane in the Braincage” Hostage Rescue.
Max Mag – Unlocked after finding 12 VHS tapes.
Galleria 1991:
Extended Mag – Unlocked after finding 3 of Carlyle's Notes.
Double Barrel – Unlocked after finding 9 Television Sets.
Semi-Auto Upgrade – Complete “Desperately Saving Susan” Hostage Rescue.
Really Huge Mag – Unlocked after findign 10 of Carlyle's Notes.
Bandolier – Complete “Save A Nerd – Part Duex” Hostage Rescue.
Quadruple Barrel – Unlocked after finding 18 Television Sets.
Fire Rounds – Unlocked after killing all 12 animal types.
Kobracon:
Extended Mag – Complete “Life's A Beach” Hostage Rescue.
High Powered Scope – Complete “Turtle Killer” Predator's Path.
Fog Scope – Complete “He's Not Heavy, He's Big Boned” Predator's Path.
Aim Stabilizer – Complete “Baiting The Hostage” Hostage Rescue.
Big Ol' Box Of Ammo – Unlocked after finding 3 VHS Tapes.
Semi-Auto Upgrade – Complete “Insurance Scammer” Predator's Path.
Explosive Rounds – Unlocked after killing 6 Animal Types.