Quick Q & A. Q: What does it mean to have Adjustable rapid fire? A: Adjustable rapid fire gives you freedom to easily make your own rapid fire. You can slow down automatic weapons to pinpoint precision or even speed single shot weapons to unreal speeds! Q: How easy is it to adjust the speed? A: It is very easy to adjust the speed. Simply enter programming mode and then use the right thumb-stick to speed it up and the left one to slow it down! Q: What games do the rapid fire work for? A: Call of Duty 4: Modern Warfare 2 Call of Duty 4: Modern Warfare Call of Duty: World at War Gears of War 2 Halo 3 Halo 3: ODST Left 4 Dead 2 Left 4 Dead Grand Theft Auto IV Rainbow Six Vegas 2 Q: How do I operate the rapid fire? A: After toggling the mod on, simply pull and hold the Right Trigger! Q: Can I get into trouble for using the mod? A: Absolutely not! This controller is 100% legal and 100% undetectable.