Yes, if rapidfire is possible on MW2, Viking will work on MW2.
"Viking can do what any other rapidfire mod chip can do"
We use the PIC18LF14K50 microcontroller from Microchip. With it's built-in USB and 12 MHz external clock we have far and above MORE BALLS than any other mod chip on the market.
The other mod shops have been playing a lot of word games to try to make their mods sound better. In reality, the code for Viking controllers and the code for the competitor's controllers are pretty equal. It's basically just our USB feature that sets us miles ahead of the other guys. We'll have the COD:MW2 updated rapidfire code within a day of the other mod shops, the difference is our customers will be playing it instantly after downloading, while evilmodcontrollers / rapidfiremods customers will be sending theirs in the mail and will begin the waiting game....