Not usually something I would post but there seems to be a lot of curiosity about them. These were taken from Rockstar’s website.
Weapon cheat 1 – LOADOA
Grants: grenade, nightstick, pistol, minigun, assault, micro smg, stubby shotgun
Weapon cheat 2 – LOADOB
Grants: molotov, teaser, dual pistols, flamethrower, carbine, smg, dual-barrel
Weapon cheat 3 – LOADOC
Grants: mine, chainsaw, revolver, flamethrower, carbine, smg, dual-barrel
Weapon cheat 4 – LOADOD
Grants: flashbang, bat, pistol, rpg, carbine, micro smg, stubby shotgun
You will know you have entered a cheat successfully when all of the magnetized letters go back to their original position on the board and a piece of text appears at the bottom of the screen with the load-out name you selected. Once you exit your safe house, you can switch weapons by pressing the pause button in the upper right hand corner (a screen with all of your current weapons will pop up).