ye seano 1234 is right. i use that but i like do 0.00000001 and it works. with my noob tubes it sounds like a constant buzzzing noise like a bee :p i did it on the m40 and rpg's aswell and the m40 gets 1 shot kills and the rpg kills you if you dont use god mode but if you do use god mode its like knock back or whatever that infection was sorry i cudnt give you my codes but im on my phone :p