Battlefield 3 Co-Op Unlocks - Call of Duty: Modern Warfare 3
13 Feb 2012, ID#5002 Battlefield 3 Co-Op Unlocks
The following weapons are unlocked through the co-op portion for the four available kits in Battlefield 3. If you unlock ALL the weapons listed below you will earn the Lock 'n' Load Achievement.
M39 EMR (Recon):
MP412 REX (ALL):