The codes should work with the region specified but may work for other regions as well.
Device Compatibility: Action Replay, CodeBreaker & GameShark
P1 Has Machinegun
800fc1780003
P2 Has Machinegun
800fc1d40003
Infinite Health P1
800fc1740005
Infinite Health P2
800fc1d00005
Infinite Bombs P1
800fc17a0009
Infinite Bombs P2
800fc1d60009
P1 Has Grenade Launcher
800fc1780002
P2 Has Grenade Launcher
800fc1d40002
P1 Has Shotgun
800fc1780001
P2 Has Automatic
800fc1d40004
P2 Has Shotgun
800fc1d40001
P1 Has Automatic
800fc1780004