Numerous firing modes
Fully adjustable settings
Micro switch leaf is touchy(see review)
This is one of the best upgrades you can get for the a5. It performs leaps and bounds over the gta board and the WAS board. Installation is simple, but the micro switch leaf can be a bit touchy. Installed mine and it worked perfectly right out of the box, but when I removed the grip for general service the trigger would not quit firing. I had to readjust micro switch leaf to fix the problem. Since then I have had no problems what so ever. Like the original gta egrip the rampage is turned on and off automatically, unlike the WAS which you have to turn off at the end of the day. You pull the trigger, it's on, you release the trigger, it's off. Fully adjustable rate of fire from 5-30 bps, fully adjustable ramping rates, and adjustable dwell and debounce(if you really want to fine tune, but works perfectly on factory settings) Mine is the v2 rampage and has 8 different firing modes(semi, burst, reactive, full auto, turbo, rampage, psp3, and nxl) You can adjust every mode to suit the way you play.
If you own the a5 and want unbelievable fire power the Rampage is for you. However, in order to get the most from the board you will have to fully upgrade your cyclone(soft paddles, ratchet mod, piston housing upgrade, and piston rod upgrade). I have my bps set to 22 and have not broken a ball since the install. This thing is AWESOME!