Press R2(2), L1, R2, Left, Down, Right, Up, Left, Down, Right, Up during game play. A message will confirm correct code entry. Repeat this code for more ammunition. To get unlimited ammunition, enable the "All weapons" code continuously until whatever you want is at 9999 shots. The next time your clip runs out, it will reload automatically but the magazine (9999) will stay the same. Note: If you are busted your weapons will disappear and this code will have to be repeated.