All Weapons

For all weapons and maximum ammo, call up the inventory screen and press one of the following key sequences (depending on how you set your controls.)

Default Controls:
L1, Triangle, R2, L2, L2, R2, Circle, L1

Control Method 2:
Triangle, Circle, R2, L2, L2, R2, L1, Triangle

Control Method 3:
Triangle, R1, R2, L2, L2, R2, L1, Triangle