Before you can enter these codes, you have to enable the console. To do so, add "+set ui_console 1" to the shortcut icon. So, for example it would look like "C:Program FilesEA GAMESMedal of Honor Pacific Assault Demomohpa_demo.exe" +set ui_console 1.
After doing that, try out these new weapons by typing the following codes into the console:
Ok to get the cheats codes and the console working go to your medal of honor pacific assualt shortcut. Now type in at the end of your shortcut which should look like this. Example: C:ProgramFilesEA Gamesmohpasetup.exe" setdeveloper 1 then press the ` button.